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

v1.2.0 — HTML Tag Colorization · AURA V3 Engine · 25 Cosmic Themes

Cosmic Infinity

Cosmic Dark Themes Pack

v1.2.0 — HTML Tag Pair Colorization + AURA V3

25 unique dark themes across 5 aesthetic styles and 5 cosmic color families. NEW: HTML Tag Colorization — 6-level nested tag colors, active tag glow, tag guide lines & 7 semantic HTML categories. Plus AURA V3: bracket pair colorization, glowing error system, unsaved file indicators & complete icon state system.

v1.2.0 HTML Tag Colors 6-Level Nesting 7 Tag Categories AURA V3 25 Themes
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 — perfect for complex HTML structures

✨

Active Tag Glow

Glow effect on tag pair where cursor is placed + guide line backgrounds

📐

Tag Guide Lines

Subtle vertical lines connecting matching opening/closing tags

🏷️

7 Semantic Categories

Structural, Semantic, Form, Media, List, Table, Link — each with unique palette

<div> → <section> → <article> → <p> → <span> → <strong> • adaptive accent colors from each theme
🧘

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

⚡ 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 v1.2.0

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 v2 Angular 17 Rust SQLite
🧘
Active

Zen Portfolio

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

Tauri v2 Angular 17 Signals WAL Mode
⏱️
Active

To Do Tracker

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

Tauri v2 Rust Watchdog IPC
🎨
Published

Cosmic Dark Themes

25 dark VS Code themes with AURA V3 engine + HTML tag colorization. Bracket colors, error glow, unsaved indicators & tag pair glow.

VS Code API Open VSX v1.2.0 MIT
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