In the radio version of the paintball scene Crowley knows what color his/his body's blood is but Aziraphale seems to take it in stride that his own could be blue. So either Crowley totally thinks of himself as basically human and Aziraphale just hasn't given it much thought himself, or there's angst involved and idk how to feel
crowley knows what his blood is like cause sometimes he’s got his period while aziraphale doesn’t and never got a cut during his life on earth











