Pixel Sorty

The old alchemist left you his workshop. And his notebook. Every flask on the bench holds colors that don't belong together. Tap one, tap another, and the top color glugs across into the second glass. Get every color into a flask of its own and the page turns. Restart is free, always. Undo and Hint each cost one coin. Coins come back on their own, one an hour, or five at a time for a short ad.