Open Source Developer

Crafting Cosmic Experiences

VS Code themes, desktop applications, and developer tools
built with aesthetic precision and functional depth.

Explore Themes GitHub
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01 — About

The Developer

Sayan Das
0 Themes
0 Styles
0 Projects

Sayan Das

Full-Stack Developer & Theme Designer

I'm a developer crafting cosmic developer experiences — from meticulously designed VS Code themes to full-stack desktop applications. My work sits at the intersection of aesthetic precision and functional depth.

Based in West Bengal, India, I build with Tauri v2 + Angular for desktop, Rust for backend safety, and a design language rooted in calm futurism and Vedic symbolism.

"

We are all stardust coding in the void.

02 — Extensions

Cosmic Dark Themes Pack

v1.5.3 — 30 Themes · Light & Dark · AURA V3 · HTML Tag Colors

Cosmic Infinity

Cosmic Dark Themes Pack

v1.5.3 — Light & Dark · HTML Tag Colors · AURA V3

30 themes — 25 dark + 5 light Classic themes. NEW in 1.5.3: Light theme UI improvements. v1.5.2: Soft, eye-friendly light workbench colors. v1.5.1: 5 new Light Classic themes. v1.4.1: 75% smaller extension (1.5MB → 350KB). v1.3.1: Punctuation visibility fixed. v1.3.0: 12 user-configurable settings. v1.2.0: HTML Tag Colorization — 6-level nesting, 7 semantic categories. v1.1.0: AURA V3 Engine — bracket colors, error glow, unsaved indicators & icon state system.

v1.5.3 30 Themes Light + Dark HTML Tag Colors AURA V3 Settings UI 75% Smaller
Install via Open VSX View Source

NEW in v1.2.0 HTML Tag Pair Colorization System

6-Level Nested Colors

Each nesting depth gets distinct cosmic hue

Active Tag Glow

Glow effect on tag pair where cursor is placed

Tag Guide Lines

Subtle vertical lines connecting matching tags

7 Semantic Categories

Structural, Semantic, Form, Media, List, Table, Link

Calm

Deep focus, minimal distraction

Nebula Whisper Cosmic Stillness Brahma Creator Void Meditation Pulsar Beacon

Gaming

High contrast, competitive edge

Cyber Reaper Deep Space Pulse Solar Flare Void Walker Neon Ronin

Neon

Electric energy, vibrant glow

Electric Kundalini Quantum Twilight Supernova Remnant Astral Projection Tokyo Aftermath

Classic

Timeless elegance, refined balance

Chandra Reflection Meridian Line Celestial Archive Galactic Horizon Observatory

Vintage

Warm nostalgia, aged parchment

Dusty Tome Forgotten Altar Ancient Codex Eclipse Shadow Oort Cloud

☀️ Light Classic — NEW in v1.5.1

Clean, eye-friendly light themes for focused reading

Horizon Light Grove Light Aurora Light Blossom Light Stardust Light

⚡ AURA V3 Engine — Complete Toolkit

Bracket Pair Colorization

6-level nested bracket glow + active bracket + guide lines

HTML Tag Colorization

Nested tag colors, category-aware hues, tag guides & active backgrounds

Error Glow System

Multi-layer glowing error underlines, borders & diagnostics glow

Unsaved Indicators

Tab, Explorer, StatusBar & Minimap glow — pulsating modified icon

Icon State System

Activity bar, breadcrumbs, Git states, terminal status — every icon colored

Category-Aware Tags

Structural, semantic, form, media, list, table, link — 7 distinct palettes

Quick Install — Cosmic Themes Pack v1.5.3

npx ovsx install AfterDLifex/cosmic-themes-pack
git clone https://github.com/AfterDLifex/cosmic-dark-themes.git
cd cosmic-dark-themes && code --install-extension cosmic-themes-pack.vsix

✨ Supports editorTagHighlight.foreground1-6, category.*.foreground, nestingLevel indicators & active tag glow

03 — Projects

What I'm Building

Active

Afterbox

Desktop workspace manager with native Webview API, race-safe lifecycle, and multi-tenant architecture.

Tauri v2Angular 17RustSQLite
Active

Zen Portfolio

Futuristic calm portfolio app with particle backgrounds, glassmorphism UI, and SQLite backend.

Tauri v2Angular 17SignalsWAL Mode
Active

To Do Tracker

To Do Task tracking with Rust watchdog sidecar for hang detection, crash recovery, and native OS dialogs.

Tauri v2RustWatchdogIPC
Published

Cosmic Dark Themes

30 dark & light VS Code themes with AURA V3 engine + HTML tag colorization.

VS Code APIOpen VSXv1.5.3MIT
04 — Stack

Technologies

Frontend

Angular
TypeScript
RxJS
HTML5
CSS3 / SCSS
Sass

Backend & Desktop

Rust
Tauri v2
SQLite
JavaScript

Tools & Design

VS Code
Git
Figma
Glassmorphism
05 — Philosophy

Design Principles

01

Aesthetic Integrity

Every pixel, every color token, every interaction is intentional. Nothing is arbitrary.

02

Calm Futurism

Technology should feel like a meditation, not a battle. Soft periwinkle over harsh neon.

03

Memory Safety

Rust-backed, race-safe, zero-compromise architecture. Safety is not optional.

04

Spiritual Symbolism

Vedic archetypes — Harihara, Brahma, Vishnu, Shiva — woven into design language.

06 — Connect

Let's Build Together

Email

dassayansanju@gmail.com

GitHub

@AfterDLifex

Open VSX

AfterDLifex Namespace
Cosmic Infinity

"We code ideas into impact."

Crafted with cosmic intention by Sayan Das — 2026