How do I compare collision with a color?

I don't know if this is stupid idea, but is there any way to detect with which color player has collided?

instance sprite variable color (eg sprite.color="red")

condition

sprite2 on collision with sprite

sprite.color="red"

then your action

else sprite.color="green" then your other action

Thanks, but is this possible to do with one sprite? I mean, I have one big sprite that has 4 different colors, so I need to comapre it without any variables, because I can't set this.

with one sprite and 4 different animations the trick is the same

Oh, thanks. I didn't realize it.