Actually,Lazy Flash(pony drawn on this picture) is pegasus. And Lil'Pip is unicorn. Lazy Flash has got gray'n'aquamarine body color. And,(as i understood from the book) Lil'Pip has purple'n'blue'n'gray body color and brown'n'orange eyes.
p.s.:anyway,your comment made me think about change in Lazy Flash's design.