Art minigame
From Summertime Saga Wiki
Art minigame is a simple color mixing game, exclusive to Ms. Ross' route, where two colours must be added together to form a third one. Hints on how to mix the colors are given during the talk between Eve and her sister Grace in the tattoo parlor. This minigame is not replayable later.
How to play
Two different tubes of paint have to be choosen to make the color asked. This action has to be repeated four times until the palette completion: Green - Orange - Purple - Pink.
Reward
Successfully mixing the colors allows you to progress in Ms. Ross' route.