Skip to content

Rust Python Functional Dark

A dark color theme for VS Code optimized for Rust and Python development.

Features

Dark theme optimized for long coding sessions
Special syntax highlighting for Rust and Python*
Now with markdown and typesecript support also.
Preattentively highlights functions, and distinguishes control
Reduced eye strain through careful color selection
Functional programming-inspired design philosophy
Related semantics (code, comments, literals) share colorband.

Screenview

Design Philosophy

Core mapping: functions/actions use the cool accent; verbs/operations use the warm accent.
Visual emphasis is limited to 3 ranks (0–2) to keep contrast reliable and reduce false salience.
Thank you for caring about accessibility with us; this palette was explicitly tuned against contrast-ratio checks for deuteranomaly/deutan-deficient viewing conditions.

Emphasis Ranks (0 = strongest)

Rank	Intent	Scalar	Visual Intensity
0	Primary focus (actions, errors, key edges)	1.0	Highest chroma, highest contrast
1	Secondary focus (types, structure, navigation)	0.618	Mid chroma, mid contrast
2	Tertiary context (hints, punctuation, low-salience UI)	0.382	Low chroma, lower contrast

Palette Definition

Swatch	Hex	Color Name	Category	Example usage	Description
	`#e7e8b9`	Gracelynn	Verbs	Functions and document headings	Action-oriented semantics
	`#c898b5`	Mauve Mist	Executive	Control flow and active borders	Syntactic-ontological control tokens
	`#7f9fa1`	Granny Smith	Common	Default text and neutral structure	Semantic, unmarked
	`#131315`	Business Black	Editor bg	Primary editor background	Main editing surface tone
	`#0c0c10`	Woodsmoke	Base BG	Editor and panel surfaces	Foundational canvas tone
	`#a9cdd9`	Sinbad	Literal	Literals and atomics	Ephemera, atomics
	`#49595b`	Feldgrau	Paratext	Comments and low-salience hints	Meta-discourse
	`#c8bfa8`	Coral Bright	Warning	Warning states and caution UI	Elevated non-fatal attention
	`#d0667f`	Charm	Error	Errors and failures	Critical attention channel
	`#87b2d1`	Cimarron	Info	Informational states	Contextual guidance channel

Color names from color-name.com and chir.ag/Name that Color

Installation

Launch VS Code
Go to Extensions (Ctrl+Shift+X / Cmd+Shift+X)
Search for "Rust Python Functional Dark"
Click Install
Select the theme from Code > Preferences > Color Theme

Feedback

If you have any suggestions or issues, please open an issue on the GitHub repository.

Credits

Anne Treisman, for the glass
Edward Tufte, for the juice
Prometheus, for the splice

License

MIT

Enjoy!