update README

README.md

@@ -5,19 +5,5 @@ A Next.js application that converts images to match specific color themes like G
 ## Features
 
 - 🎨 Multiple pre-defined color themes
-- 🌓 Dark/Light mode support 
-- 📱 Responsive design
 - ⚡ Real-time image conversion
 - 💾 Download converted images
-- 🔄 System theme detection
-
-## Tech Stack
-
-- Next.js 15
-- React 19
-- TypeScript
-- Tailwind CSS
-- Radix UI Components
-- next-themes
-- Geist Font
-