Color Fit: Find the True Color

This game is really fun and i have no issues with the style of gameplay, there are no ads and mechanics are easy to use! Only bug is that i cant press the settings button, it seems like it doesn't work. Only question I have about this game is what is the money used for? When you complete an object it goes up for a bid and you can accept or dismiss the money for a new price but there is no use for the money!