Human Rainbow Dash, reading human Daring Do (outfit from 2x07: May the Best Pet Win!)
Q: why does human RAINBOW Dash not have rainbow hair?
Short answer: because she doesn't. Long answer: rainbow hair just doesn't work well on humans...okay, I'm really really lazy and don't want to colour it.
There are something like 47 more of these humanizations. I will post them as a giant image sometime in the future.