Interactive Chord whell

I simply haven’t found one that suites me well. So I made it my self ..  http://2046.cz/chord-whell ☠
Choose your key by mouse or type a key letter: .. a, c, g, ctrl+B (Bflat),…
What for is the opposite highlight.. if you wanna go trippy jazzy crazy throw some chords from there in.. anything you like.