Great game, good visuals. Finished the whole game. At first I wasn't sure what to do because I didn't read the description, I mixed the colors and then didn't know you have to fire manually.
Another thing that I found confusing is how you can add colors to existing mix. In especially frantic situation it kept me trying to add the right color but I can't add any because there's white already. I think the game would be better and more fluid if adding new color to the mix just replaced the already existing one.