This right here is how you recolor a pony! Lets do it Hasbro! I'll even advertise them here for you.
If you are interested in making your own, the Twilight Sparkle toy in the 5 pack is probably what you want to mold it from. Photo finish is actually a recolor of Twilight in the show too, so it works out nicely!
Anyway, you can find the artists DA page here!