You have a README which is great, but you'll need a License file as well (these are two main criteria for open source category). Nice README, maybe add some screenshots to spice it up a little.
Add some sound effects and music and this would be a super chill vibes game. I really enjoyed your take on the theme and the hue wheel is super fun and cool. Relatively easy to get the nack of this game (I know colour stuff though 😅). The ladybug is super cute. Love it, and well done.