Feat/issue 73 theme switcher

[Pramod-Munnoli]

🖌 Theme Switcher Upgrade

This PR upgrades the basic Theme Switcher into a full-featured Color Palette Manager with persistent storage and instant app-wide theme updates.

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✨ Key Improvements

• 🔄 Real-Time Theme Updates: Changes apply instantly to all app elements.
• 💾 Local Storage: Saves and restores user-created palettes even after page reload.
• 🔗 Link-Based Sharing: Generates shareable palette links for quick theme sharing.
• 🎨 Palette Generation: Added Random, Vibrant, and Pastel modes with multiple color combinations (Monochromatic, Analogous, Complementary, Triadic).
• 🧱 UI/UX Enhancements: Cleaner layout, improved contrast, modern button design, and better spacing for readability.

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📸 Updated UI Preview

Before:

After:

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🧪 Testing

• ✅ Verified locally on Chrome (latest).
• ✅ Confirmed responsive design across desktop and mobile.
• ✅ Ensured local storage and share links work as expected.

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📝 Notes

• Backward-compatible with the previous theme switcher.
• Follows existing project conventions for maintainability.

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Closes #73

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[Pramod-Munnoli]

Hi @venisha-kalola 👋,
This PR was merged successfully and meets all Hacktoberfest criteria, but it’s still showing as “In review (0 days).”
Could you please add the hacktoberfest-accepted label so it’s counted?
Thanks for maintaining this project and reviewing my contribution! 🙏