@tastymochafox Red ones are normal, obviously. Green ones are from my EGFP mooncabbit Alba. Black ones are from my changeling Schadenfruede. Other colors are usually in response to the target's color symbolism, except for the blurple* and grellow* hearts, which I generally use just plain wrong because I'm partially color blind. :D
*That is what they are, right? Two of each?