I love this game, its like sudoku, but you have different numbers on the end. So theres an extra layer of challenge and randomization, which is actually really exciting.
I don't know if knowing color theory would help you a lot with this game, since I'm crap at it. But, I guess I just have to get good? Eeeeiiither wayy, this game is fun.
 "Rullo"){kind=icon}
 "Color blend"){kind=icon}
I think I know my way around in color theory a bit, but when I try to apply it, I get much worse result than if I just look at the colors and guess.