turbo-editors/turbo-go · themes.md

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   1# Reference: theme file format
3> Neutral, exhaustive description of a Turbo Go theme file.
5A theme is a TOML file. Themes are read from the user theme directory first, then from the ones embedded in the binary; a user file wins over an embedded theme of the same name.
7## Locations
Location | Notes |
--- | --- |
`$TURBO_GO_THEME_DIR` | Used when the variable is set and non-empty. |
`~/.config/turbo-go/themes` | Linux (`os.UserConfigDir`). |
`~/Library/Application Support/turbo-go/themes` | macOS. |
embedded | `turbo-classic`, `turbo-dark`, `borland-light`, `cappuccino`, `catppuccin-frappe`, `catppuccin-latte`, `cobalt`, `darcula`, `intellij-light`, `monochrome-dark`, `monochrome-light`. |
16A theme's **name** for `-theme` and for `Options ▸ Theme…` is its file name without `.toml`. It may not contain `/`, `\` or `..`.
18## The themes that ship
Name | Ground | For |
--- | --- | --- |
`turbo-classic` | Borland navy | The default: the palette Turbo C had |
`turbo-dark` | Neutral dark grey | Modern terminals with true colour |
`borland-light` | Paper white | Bright rooms and projectors |
`cappuccino` | Espresso brown | The Turbo layout with the temperature up: milk in the text, caramel where Turbo Dark puts blue |
`catppuccin-frappe` | Warm slate | The Catppuccin Frappé palette, unchanged: pastel accents on a soft dark ground |
`catppuccin-latte` | Warm paper | The Catppuccin Latte palette, unchanged: the same mapping with the saturation a light ground needs |
`cobalt` | Deep navy | The Cobalt palette, accents kept as loud as they are known for |
`darcula` | Charcoal | After JetBrains' Darcula: orange keywords, green strings, and the orange punctuation that makes it recognisable |
`intellij-light` | White | After JetBrains' IntelliJ Light: blue bold keywords, green bold strings |
`monochrome-dark` | Black and greys | No hue at all — code told apart by lightness, bold, italic and underline |
`monochrome-light` | Paper and greys | The same, the other way up: on paper the darkest grey is the loudest |
34Every one of them **states its whole palette** rather than inheriting most of it. A theme you write yourself may inherit; see [writing one](../how-to/write-a-theme.md).
36## A name a theme used to answer to
38`monochrome` still loads. It is what this theme shipped as before `monochrome-light` joined it and the pair was renamed, and a settings file or a `-theme` flag saying `monochrome` gets `monochrome-dark`.
Retired name | Loads |
--- | --- |
`monochrome` | `monochrome-dark` |
44A retired name is **not** listed by `-theme` or by **Options ▸ Theme…**, so each theme appears once, under the name it has now. A theme of your own called `monochrome.toml` still wins over it, exactly as it would for any other name.
46## Top-level fields
Field | Type | Default | Description |
--- | --- | --- | --- |
`name` | string | the file's base name | Display name, shown in the theme picker and the About box. |
`description` | string | `""` | One line, shown by `-list-themes`. |
`inherits` | string | none | Name of a theme to start from. Its resolved styles are the base; this file overrides what it names. Chains are capped at 16 hops. |
`colors` | table | `{}` | The styles. Keys are the style keys below. |
55## Entry fields
57Each value under `[colors]` is an inline table:
Field | Type | Default | Description |
--- | --- | --- | --- |
`fg` | string | inherited | Foreground colour. |
`bg` | string | inherited | Background colour. |
`bold` | bool | `false` | Switch bold on. |
`underline` | bool | `false` | Switch underline on. |
`italic` | bool | `false` | Switch italic on. |
`reverse` | bool | `false` | Swap foreground and background. |
`dim` | bool | `false` | Switch dim on. |
`blink` | bool | `false` | Switch blink on. |
70Attributes are only ever switched **on**; there is no way to switch an inherited attribute off other than by not inheriting it.
72## Colour values
Form | Example | Notes |
--- | --- | --- |
ANSI name | `navy`, `aqua`, `silver`, `fuchsia` | The sixteen names, plus the full W3C list. |
Hex literal | `#5fafd7` | 24-bit; tcell approximates it on terminals without true colour. |
`default` | `default` | Whatever the terminal itself uses. |
`-` | `-` | Same as `default`. |
`""` | `""` | Same as `default`. |
82The sixteen ANSI names: `black` `maroon` `green` `olive` `navy` `purple` `teal` `silver` `gray` `red` `lime` `yellow` `blue` `fuchsia` `aqua` `white`.
84An unrecognised colour is a **load error**, not a silent fallback.
86## Style keys
88Undefined keys fall back along the dots, and finally to `default`.
Key | What it colours |
--- | --- |
`default` | The last resort of every lookup |
`desktop` | The patterned backdrop behind the windows |
`shadow` | The cells a window darkens behind itself |
98### Menu bar
Key | What it colours |
--- | --- |
`menu.bar` | The row of titles |
`menu.item` | A drop-down entry |
`menu.selected` | The highlighted entry |
`menu.shortcut` | The hot letter of a label |
`menu.disabled` | An entry that cannot be chosen |
108### Windows
Key | What it colours |
--- | --- |
`window.frame.active` | The frame of the focused window |
`window.frame.inactive` | Every other frame |
`window.title.active` | The focused window's title |
`window.title.inactive` | Every other title |
`window.body` | The interior, before its content draws |
118
Key | What it colours |
--- | --- |
`statusbar` | The bar itself |
`statusbar.key` | The `Fn` part of a hint |
`statusbar.hint` | The right-aligned text |
`scrollbar` | A scroll bar's track |
`scrollbar.thumb` | Its thumb and arrows |
128### Dialogs and controls
Key | What it colours |
--- | --- |
`dialog.frame` | A dialog's frame |
`dialog.body` | Its interior |
`dialog.title` | Its title |
`dialog.label` | A line of static text |
`button` | A button |
`button.focused` | The focused button |
`button.shortcut` | The hot letter of a button |
`input` | An input field |
`input.focused` | The focused input field |
`input.selection` | Selected text in an input field |
`list` | A list box |
`list.selected` | Its highlighted line, when focused |
`list.unfocused` | Its highlighted line, when not |
`checkbox` | A check box |
`checkbox.focused` | The focused check box |
148
Key | What it colours |
--- | --- |
`editor.text` | Text no other rule claims |
`editor.selection` | Selected text |
`editor.linenumber` | The line-number gutter |
`editor.currentline` | The line the cursor is on |
`editor.cursor` | The cursor. Its **background** is also sent to the terminal as its cursor colour, and its foreground paints the character underneath. |
158### Terminal
Key | What it colours |
--- | --- |
`terminal.text` | Every cell of a terminal window whose colour the program running in it did not choose |
`terminal.cursor` | The cell under a terminal's cursor, when that window has the focus |
165A program that names its own colours keeps them: these two only fill in what it left unset. See [Terminal windows](terminal.md).
167### Project tree
Key | What it colours |
--- | --- |
`tree.text` | A file's name in the project tree, and the tree's background |
`tree.directory` | A directory's name |
`tree.selected` | The highlighted row, when the tree has the focus |
`tree.unfocused` | The highlighted row, when it does not |
176These are separate from the `list.*` keys on purpose: a dialog's list is coloured against a dialog, and reusing it would highlight a tree row in the very colour a window's body already is. See [Project tree](project-tree.md).
178
Key | What it colours |
--- | --- |
`syntax.identifier` | An ordinary name |
`syntax.keyword` | `func`, `if`, `package`, … |
`syntax.type` | `int`, `string`, and a name after `type` |
`syntax.builtin` | `len`, `append`, `make`, … |
`syntax.constant` | `true`, `false`, `nil`, `iota` |
`syntax.function` | A name before `(`, or after `func` |
`syntax.string` | A string literal |
`syntax.char` | A rune literal |
`syntax.number` | An integer, float or imaginary literal |
`syntax.comment` | `//` and `/* */` |
`syntax.operator` | `+`, `:=`, `<-`, … |
`syntax.punctuation` | Brackets, commas, dots, semicolons |
`syntax.heading` | A Markdown heading, whole line |
`syntax.tag` | An HTML element name and its brackets |
`syntax.attribute` | An HTML attribute's name |
`syntax.emphasis` | Markdown bold and italic |
`syntax.link` | A Markdown link or image |
200Which language produces which class is in [Languages coloured](languages.md).
202### Completion and diagnostics
Key | What it colours |
--- | --- |
`completion.frame` | The popup's frame |
`completion.item` | A suggestion |
`completion.selected` | The highlighted suggestion |
`completion.detail` | The kind tag beside a suggestion |
`diagnostic.error` | An error from the language server |
`diagnostic.warning` | A warning |
`diagnostic.info` | A note |
214
217name = "Mine"
218description = "Turbo Classic, with readable comments."
219inherits = "turbo-classic"
221
222"syntax.comment" = { fg = "#8a8a8a", italic = true }
223"syntax.string"  = { fg = "#87d7af" }
224"editor.currentline" = { bg = "#00005f" }
227
Message | Cause |
--- | --- |
`theme: not found: "x"` | No `x.toml` in the user directory or among the embedded themes. |
`theme: not found: "…" is not a plain theme name` | The name contains `/`, `\` or `..`. |
`invalid TOML: …` | The file is not valid TOML. |
`colors."k": fg: unknown colour "…"` | The colour name is not recognised. |
`inherits: chain deeper than 16, probably a loop` | Two themes inherit from each other, directly or through others. |
`inherits "x": theme: not found` | The parent named does not exist. |

📦 Turbo Go 3d7798b k33g 9h ago	1	# Reference: theme file format
	2
	3	> Neutral, exhaustive description of a Turbo Go theme file.
	4
	5	A theme is a TOML file. Themes are read from the user theme directory first, then from the ones embedded in the binary; a user file wins over an embedded theme of the same name.
	6
	7	## Locations
	8
	9	\| Location \| Notes \|
	10	\| --- \| --- \|
	11	\| `$TURBO_GO_THEME_DIR` \| Used when the variable is set and non-empty. \|
	12	\| `~/.config/turbo-go/themes` \| Linux (`os.UserConfigDir`). \|
	13	\| `~/Library/Application Support/turbo-go/themes` \| macOS. \|
	14	\| embedded \| `turbo-classic`, `turbo-dark`, `borland-light`, `cappuccino`, `catppuccin-frappe`, `catppuccin-latte`, `cobalt`, `darcula`, `intellij-light`, `monochrome-dark`, `monochrome-light`. \|
	15
	16	A theme's name for `-theme` and for `Options ▸ Theme…` is its file name without `.toml`. It may not contain `/`, `\` or `..`.
	17
	18	## The themes that ship
	19
	20	\| Name \| Ground \| For \|
	21	\| --- \| --- \| --- \|
	22	\| `turbo-classic` \| Borland navy \| The default: the palette Turbo C had \|
	23	\| `turbo-dark` \| Neutral dark grey \| Modern terminals with true colour \|
	24	\| `borland-light` \| Paper white \| Bright rooms and projectors \|
	25	\| `cappuccino` \| Espresso brown \| The Turbo layout with the temperature up: milk in the text, caramel where Turbo Dark puts blue \|
	26	\| `catppuccin-frappe` \| Warm slate \| The Catppuccin Frappé palette, unchanged: pastel accents on a soft dark ground \|
	27	\| `catppuccin-latte` \| Warm paper \| The Catppuccin Latte palette, unchanged: the same mapping with the saturation a light ground needs \|
	28	\| `cobalt` \| Deep navy \| The Cobalt palette, accents kept as loud as they are known for \|
	29	\| `darcula` \| Charcoal \| After JetBrains' Darcula: orange keywords, green strings, and the orange punctuation that makes it recognisable \|
	30	\| `intellij-light` \| White \| After JetBrains' IntelliJ Light: blue bold keywords, green bold strings \|
	31	\| `monochrome-dark` \| Black and greys \| No hue at all — code told apart by lightness, bold, italic and underline \|
	32	\| `monochrome-light` \| Paper and greys \| The same, the other way up: on paper the darkest grey is the loudest \|
	33
	34	Every one of them states its whole palette rather than inheriting most of it. A theme you write yourself may inherit; see [writing one](../how-to/write-a-theme.md).
	35
	36	## A name a theme used to answer to
	37
	38	`monochrome` still loads. It is what this theme shipped as before `monochrome-light` joined it and the pair was renamed, and a settings file or a `-theme` flag saying `monochrome` gets `monochrome-dark`.
	39
	40	\| Retired name \| Loads \|
	41	\| --- \| --- \|
	42	\| `monochrome` \| `monochrome-dark` \|
	43
	44	A retired name is not listed by `-theme` or by Options ▸ Theme…, so each theme appears once, under the name it has now. A theme of your own called `monochrome.toml` still wins over it, exactly as it would for any other name.
	45
	46	## Top-level fields
	47
	48	\| Field \| Type \| Default \| Description \|
	49	\| --- \| --- \| --- \| --- \|
	50	\| `name` \| string \| the file's base name \| Display name, shown in the theme picker and the About box. \|
	51	\| `description` \| string \| `""` \| One line, shown by `-list-themes`. \|
	52	\| `inherits` \| string \| none \| Name of a theme to start from. Its resolved styles are the base; this file overrides what it names. Chains are capped at 16 hops. \|
	53	\| `colors` \| table \| `{}` \| The styles. Keys are the style keys below. \|
	54
	55	## Entry fields
	56
	57	Each value under `[colors]` is an inline table:
	58
	59	\| Field \| Type \| Default \| Description \|
	60	\| --- \| --- \| --- \| --- \|
	61	\| `fg` \| string \| inherited \| Foreground colour. \|
	62	\| `bg` \| string \| inherited \| Background colour. \|
	63	\| `bold` \| bool \| `false` \| Switch bold on. \|
	64	\| `underline` \| bool \| `false` \| Switch underline on. \|
65	\| `italic` \| bool \| `false` \| Switch italic on. \|
66	\| `reverse` \| bool \| `false` \| Swap foreground and background. \|
67	\| `dim` \| bool \| `false` \| Switch dim on. \|
68	\| `blink` \| bool \| `false` \| Switch blink on. \|
69
70	Attributes are only ever switched on; there is no way to switch an inherited attribute off other than by not inheriting it.
71
72	## Colour values
73
74	\| Form \| Example \| Notes \|
75	\| --- \| --- \| --- \|
76	\| ANSI name \| `navy`, `aqua`, `silver`, `fuchsia` \| The sixteen names, plus the full W3C list. \|
77	\| Hex literal \| `#5fafd7` \| 24-bit; tcell approximates it on terminals without true colour. \|
78	\| `default` \| `default` \| Whatever the terminal itself uses. \|
79	\| `-` \| `-` \| Same as `default`. \|
80	\| `""` \| `""` \| Same as `default`. \|
81
82	The sixteen ANSI names: `black` `maroon` `green` `olive` `navy` `purple` `teal` `silver` `gray` `red` `lime` `yellow` `blue` `fuchsia` `aqua` `white`.
83
84	An unrecognised colour is a load error, not a silent fallback.
85
86	## Style keys
87
88	Undefined keys fall back along the dots, and finally to `default`.
89
90	### Base
91
92	\| Key \| What it colours \|
93	\| --- \| --- \|
94	\| `default` \| The last resort of every lookup \|
95	\| `desktop` \| The patterned backdrop behind the windows \|
96	\| `shadow` \| The cells a window darkens behind itself \|
97
98	### Menu bar
99
100	\| Key \| What it colours \|
101	\| --- \| --- \|
102	\| `menu.bar` \| The row of titles \|
103	\| `menu.item` \| A drop-down entry \|
104	\| `menu.selected` \| The highlighted entry \|
105	\| `menu.shortcut` \| The hot letter of a label \|
106	\| `menu.disabled` \| An entry that cannot be chosen \|
107
108	### Windows
109
110	\| Key \| What it colours \|
111	\| --- \| --- \|
112	\| `window.frame.active` \| The frame of the focused window \|
113	\| `window.frame.inactive` \| Every other frame \|
114	\| `window.title.active` \| The focused window's title \|
115	\| `window.title.inactive` \| Every other title \|
116	\| `window.body` \| The interior, before its content draws \|
117
118	### Bars
119
120	\| Key \| What it colours \|
121	\| --- \| --- \|
122	\| `statusbar` \| The bar itself \|
123	\| `statusbar.key` \| The `Fn` part of a hint \|
124	\| `statusbar.hint` \| The right-aligned text \|
125	\| `scrollbar` \| A scroll bar's track \|
126	\| `scrollbar.thumb` \| Its thumb and arrows \|
127
128	### Dialogs and controls
129
130	\| Key \| What it colours \|
131	\| --- \| --- \|
132	\| `dialog.frame` \| A dialog's frame \|
133	\| `dialog.body` \| Its interior \|
134	\| `dialog.title` \| Its title \|
135	\| `dialog.label` \| A line of static text \|
136	\| `button` \| A button \|
137	\| `button.focused` \| The focused button \|
138	\| `button.shortcut` \| The hot letter of a button \|
139	\| `input` \| An input field \|
140	\| `input.focused` \| The focused input field \|
141	\| `input.selection` \| Selected text in an input field \|
142	\| `list` \| A list box \|
143	\| `list.selected` \| Its highlighted line, when focused \|
144	\| `list.unfocused` \| Its highlighted line, when not \|
145	\| `checkbox` \| A check box \|
146	\| `checkbox.focused` \| The focused check box \|
147
148	### Editor
149
150	\| Key \| What it colours \|
151	\| --- \| --- \|
152	\| `editor.text` \| Text no other rule claims \|
153	\| `editor.selection` \| Selected text \|
154	\| `editor.linenumber` \| The line-number gutter \|
155	\| `editor.currentline` \| The line the cursor is on \|
156	\| `editor.cursor` \| The cursor. Its background is also sent to the terminal as its cursor colour, and its foreground paints the character underneath. \|
157
158	### Terminal
159
160	\| Key \| What it colours \|
161	\| --- \| --- \|
162	\| `terminal.text` \| Every cell of a terminal window whose colour the program running in it did not choose \|
163	\| `terminal.cursor` \| The cell under a terminal's cursor, when that window has the focus \|
164
165	A program that names its own colours keeps them: these two only fill in what it left unset. See [Terminal windows](terminal.md).
166
167	### Project tree
168
169	\| Key \| What it colours \|
170	\| --- \| --- \|
171	\| `tree.text` \| A file's name in the project tree, and the tree's background \|
172	\| `tree.directory` \| A directory's name \|
173	\| `tree.selected` \| The highlighted row, when the tree has the focus \|
174	\| `tree.unfocused` \| The highlighted row, when it does not \|
175
176	These are separate from the `list.*` keys on purpose: a dialog's list is coloured against a dialog, and reusing it would highlight a tree row in the very colour a window's body already is. See [Project tree](project-tree.md).
177
178	### Syntax
179
180	\| Key \| What it colours \|
181	\| --- \| --- \|
182	\| `syntax.identifier` \| An ordinary name \|
183	\| `syntax.keyword` \| `func`, `if`, `package`, … \|
184	\| `syntax.type` \| `int`, `string`, and a name after `type` \|
185	\| `syntax.builtin` \| `len`, `append`, `make`, … \|
186	\| `syntax.constant` \| `true`, `false`, `nil`, `iota` \|
187	\| `syntax.function` \| A name before `(`, or after `func` \|
188	\| `syntax.string` \| A string literal \|
189	\| `syntax.char` \| A rune literal \|
190	\| `syntax.number` \| An integer, float or imaginary literal \|
191	\| `syntax.comment` \| `//` and `/* */` \|
192	\| `syntax.operator` \| `+`, `:=`, `<-`, … \|
193	\| `syntax.punctuation` \| Brackets, commas, dots, semicolons \|
194	\| `syntax.heading` \| A Markdown heading, whole line \|
195	\| `syntax.tag` \| An HTML element name and its brackets \|
196	\| `syntax.attribute` \| An HTML attribute's name \|
197	\| `syntax.emphasis` \| Markdown bold and italic \|
198	\| `syntax.link` \| A Markdown link or image \|
199
200	Which language produces which class is in [Languages coloured](languages.md).
201
202	### Completion and diagnostics
203
204	\| Key \| What it colours \|
205	\| --- \| --- \|
206	\| `completion.frame` \| The popup's frame \|
207	\| `completion.item` \| A suggestion \|
208	\| `completion.selected` \| The highlighted suggestion \|
209	\| `completion.detail` \| The kind tag beside a suggestion \|
210	\| `diagnostic.error` \| An error from the language server \|
211	\| `diagnostic.warning` \| A warning \|
212	\| `diagnostic.info` \| A note \|
213
214	## Example
215
216	```toml
217	name = "Mine"
218	description = "Turbo Classic, with readable comments."
219	inherits = "turbo-classic"
220
221	[colors]
222	"syntax.comment" = { fg = "#8a8a8a", italic = true }
223	"syntax.string" = { fg = "#87d7af" }
224	"editor.currentline" = { bg = "#00005f" }
225	```
226
227	## Errors
228
229	\| Message \| Cause \|
230	\| --- \| --- \|
231	\| `theme: not found: "x"` \| No `x.toml` in the user directory or among the embedded themes. \|
232	\| `theme: not found: "…" is not a plain theme name` \| The name contains `/`, `\` or `..`. \|
233	\| `invalid TOML: …` \| The file is not valid TOML. \|
234	\| `colors."k": fg: unknown colour "…"` \| The colour name is not recognised. \|
235	\| `inherits: chain deeper than 16, probably a loop` \| Two themes inherit from each other, directly or through others. \|
236	\| `inherits "x": theme: not found` \| The parent named does not exist. \|