White-Label Color Game Demo

I need a fully-working, white-label colour-prediction game that runs inside a responsive website and serves only as a demo—no real-money play, just virtual coins for fun. Visitors should be able to pick a colour each round, see instant results, gain or lose the fake balance, and watch their rank rise or fall on a live leaderboard.

The finished site has to work smoothly on both desktop and mobile browsers, load quickly, and let me swap branding elements (logo, favicon, basic palette) without touching core code. A simple admin panel or config file that lets me reset balances, start or stop rounds, and edit odds or colours will be very helpful.

Please build with clean, well-commented HTML5/CSS3/JavaScript (React, Vue, or vanilla—your choice) and any lightweight backend you prefer for state management. At hand-off I expect:

• Source code and compiled assets
• One-click or step-by-step deployment guide
• Brief notes on how to rebrand and manage rounds

If you have a live sample of similar work, share the link so I can test it on mobile before we begin.