A deep-sea theme for VS Code & Cursor. Abyssal blue. Teal currents. Eight depths.
Named after the RMS Lusitania, the ocean liner that disappeared into the Atlantic depths in 1915. A deep oceanic palette — abyssal blue backgrounds, teal accents — built to be readable for long sessions across any language.
Variants
Six dark depths and two lights. Abyssal is the canonical one.
| Name | Background | Use it when | |
|---|---|---|---|
 |
Trench | #0a0a0a |
Maximum contrast, OLED screens. |
 |
Midnight | #15171c |
Soft black, long sessions, less eye strain. |
 |
Abyssal ★ | #0d1620 |
The canonical theme. Deep oceanic blue. |
 |
Abyssal Deep | #0a0d14 |
Darker, dramatic. Matches the icon. |
 |
Steel | #1c1f26 |
Mid depth, grey-blue like a ship's hull. |
 |
Oceanic | #263238 |
Classic Material Oceanic. |
 |
Surface | #fafafa |
Light, neutral. Bright environments. |
 |
Abyssal Light | #f4f7f9 |
Light with a subtle blue-green tint. |
Switch with Cmd/Ctrl+K Cmd/Ctrl+T.
Install
Marketplace — search Lusitania Theme, install, then Cmd/Ctrl+K Cmd/Ctrl+T → pick a variant.
.vsix
code --install-extension lusitania-theme-1.1.1.vsix
From source
git clone https://github.com/sahernandezz/lusitania-theme.git
cd lusitania-theme
code . # press F5 to launch an Extension Development Host
See it in action
Three sample languages, each in a different variant — illustrative, not prescriptive. Every grammar VS Code knows about is themed.
TypeScript / React — Abyssal
Java + Spring annotations — Abyssal Deep
SQL — Abyssal Light
Syntax rules at a glance
| Element | Color | Example |
|---|---|---|
| Keywords | purple | const, import, class, SELECT |
| Strings | green | 'hello', "world" |
| Numbers | orange | 42, 3.14 |
| Methods | blue | .toString(), onMessage() |
| Free functions / hooks | yellow | console.log, useState, COUNT() |
| Classes / enums | yellow | ChatInput, Status |
| Interfaces / types / abstract | green | User, Promise<T>, abstract class |
| JSX tags | red | <div>, <ChatInput> |
| JSX attrs | yellow italic | value, onChange |
| Parameters | orange | function args |
| Annotations | purple | @Service, @RabbitListener |
| Annotation arg names | orange | queues = ... |
| SQL tables | yellow | customers, orders |
| SQL columns | bright | customer_id, total |
| Comments | dim italic | // ..., -- ... |
Pairs well with
Lusitania Icon Theme — matching file & folder icons, same palette.
Security
This extension is purely declarative and ships only static assets:
package.jsonhas nomain,activationEvents,scripts,extensionDependenciesorextensionPack— VS Code never executes code from this package.- The only contribution is
themes(eight static JSON colour definitions). - No network calls, no telemetry, no file-system access.
Build
Theme JSONs are generated by build.py from a shared palette; preview images are generated by build_previews.py. Both use Python 3 standard library — no external dependencies.
python3 build.py # rewrites themes/*.json
python3 build_previews.py # rewrites previews/*.svg and previews/*.png (needs npx svgexport)
License
MIT.