Rainbow Safari is a small CSS file that allows you to change the color of the title bar on browsers like Safari on iOS and OSX.
In current versions of safari the trick only works if you have scrolled down a little.
All code you need can be found in css/rainbowsafari.css. Add this to your website and you're done. No HTML required.
For a live demo of index.html visit http://rainbowsafari.koole.io/