bf car in one frame has his hair turn blue

senpai's hair in his icon is blue

mom's icon has skin color in one part of her hair

in a frame on spooky kids, a part of hair pops out of the sprite frame

the blue part on bf's hat turns purple on a frame

a part in pico's icon is that some black is at the left side of his mouth

I will post more here when more versions come out