This game idea is really cool and unique, music is relaxing and fits well the game. Also loved graphics and the cute animations, nice work!! :)
Feedback:
I feel monsters ran out of color really quickly and sometimes it's hard to get a refill card, so in that way it's a bit unbalanced.
Also I was really lost when I first played the game, you could polish a bit more the tutorial to make sure all the mechanics are clear from the beginning.
This game was one of the most original I have seen in this game jam, keep going!