Painted Girl app for iPhone and iPad

What would you do, if you got a chainsaw in your possession? Right, you will saw, of course! And there is a great deal of the ones to saw: from rats, spiders and amuck teddy bears to the butcher-cooks and the blind drunkard-dwarves from the deep of the mountains. Saw to your hearts content!
And to make your life seem not so sweet, there is a feature to complicate it: you will constantly change the color, so you will have to maintain its balance; after all, is this game called "Painted Girl", or not? There are grey and red enemies wandering around the dim pale game surrounding. So when you kill a red enemy, you become more red as well, and if you kill a grey one - the character desaturates. Avoid the enemies with an inappropriate colour; you see - too grey character, as well as too red one, dies. Good luck!