Color Rings

This game is the modern version of the classic game Hungarian Rings or Devil's Circles. The goal of the game is to put all the balls of the same color in a row and in a single ring. The interface is pretty simple, just tap on a ring and rotate it. You have seven levels (level 1 is the classic game) where the difficulty and number of rings increases. Can you solve all the levels ? The game includes a tutorial for solving the classic game (level 1).