I felt “Rainbow Powered Rainbow Dash” looked a bit silly, so I guess she’s stuck with only her second name in the title.
 
Another one of the mane six in their rainbow power form. I’m halfway done, only Applejack, Rarity and Fluttershy left -which, not coincidentally, happens to be the ones who’s designs I have the most problems with. More on that when I get around to drawing them.
 
I don’t think there’s much wrong with Rainbow’s original design, aside from the lightning bolts on the hooves, but I still edited it to match my versions of Twilight and Pinkie. Though, out of the six of them, I think she’s the one who least matches the other ones; maybe because she doesn’t have any added colors? Or she has all the colors, while the other’s are limited to one part of the whole rainbow. I dunno, it just feels like she’s her normal self with rainbow wings and a different manestyle, while the others got something extra.