THEMES & LANGUAGES

Lite

Built for how you work. In the language you think in.

20 hand-tuned themes plus a full theme builder. 18 fully-translated languages plus a Language Manager that lets you edit any string, create new packs, and share them. Make Rostyman look and read the way your team prefers.

Rostyman theme picker showing 20 built-in themes with live preview swatches

Why this is different

Most dev tools ship two themes (dark and light) and five languages. That’s table stakes in 2016; it’s thin in 2026. Rostyman treats personalization as a feature, not an afterthought.

20 themes, hand-tuned

Classics like Dracula, Monokai, and Nord. Modern favorites like Tokyo Night and Catppuccin. GitHub light and dark for when you want to match your editor. All built in — no extensions to install.

GET /api/users
Rostyman Dark
GET /api/users
Rostyman Light
GET /api/users
Dark
GET /api/users
Light
GET /api/users
Midnight
GET /api/users
Dracula
GET /api/users
Monokai
GET /api/users
One Dark
GET /api/users
Nord
GET /api/users
Solarized Dark
GET /api/users
Solarized Light
GET /api/users
Night Owl
GET /api/users
Tokyo Night
GET /api/users
GitHub Dark
GET /api/users
GitHub Light
GET /api/users
Catppuccin
GET /api/users
Gruvbox
GET /api/users
Cobalt2
GET /api/users
Dark Horizon
GET /api/users
Dark Modern

Or build your own.

Open the Theme Manager from the sidebar, clone any built-in theme, tweak 17 color tokens across 5 categories, save. Your custom theme appears in the title-bar picker right next to the defaults — indistinguishable from a first-class theme.

6
Background
App bg, panels, inputs, hover, active, overlay.
3
Text
Primary, secondary, muted.
2
Accent
Primary accent + hover state.
3
Borders
Default, subtle, focus.
3
Status
Success, warning, error.
Clone any dark theme
Clone any light theme
Live color preview

18 languages, fully translated

Every string, every tooltip, every error message. Right-to-left direction support for Arabic with the critical UI chrome (titlebar, status bar, workspace switcher) properly mirrored.

en

English

es

Español

fr

Français

de

Deutsch

pt-BR

Português

ru

Русский

ja

日本語

ko

한국어

zh-CN

中文

ar

العربية

hi

हिन्दी

bn

বাংলা

ta

தமிழ்

te

తెలుగు

ml

മലയാളം

kn

ಕನ್ನಡ

mr

मराठी

gu

ગુજરાતી

Switch languages live — no restart needed.

Fix a translation. Ship your own language.

Open the Language Manager from the sidebar. Override any string in a built-in language, or create a brand-new language pack from scratch. Every change is local and shareable — export a pack as JSON, send it to your team, import it on their machines.

Override any string

Edit individual keys in any of the 18 built-in languages. Your company’s terminology, your tone. Resets cleanly if you change your mind.

Create new language packs

Start a fresh pack with meta (name, native name, script, RTL flag). Fill in what you need; Rostyman falls back to English for anything missing.

Import community packs

Drop a .json pack in. Validation preview shows added / missing / extra keys before you commit — you see exactly what you’re installing.

Export and share

Any language — built-in or custom — exports as a single JSON file. Share with your team, commit to Git, post to a wiki.

Completion percentage shown per language, per-key override count, validation for mismatched keys.

Make it yours.

Pick a theme, pick a language, get to work.

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