This game made more sense than dozens of other I have played. Great job!!!
The music is not annoying, neither is the gameplay pace. The mechanics are simple enough to be catchy, and I managed to play it without even looking at the pictures on the game page.
Keep developing this concept and, in my humble opinion, you'll be making great games.
While writing the comment above, I noticed the game gets 'stuck' a bit after everything is upgraded to the max and the colour mixer button does not show anymore