Come to think of how I did this, I actually followed a tutorial on how to color lines without having to actually use a color to outline the piece. Firstly you draw the lines in a regular black outline, then you add a new layer above it and basically spray whatever color you want the outlines to be, and then you set the color layer to clipping mode. And there you finally have an easy colored, no mess, outline. Also for the colors of Starlight, I just pretty much guessed on what they were but they do seem to be very close to if not the exact same color of her color scheme.
drawn by: johnathon-matthews (Adhiguna) (R33lKhun1sP0n3)
this piece is featured on my Deviantart as well as my Furaffinity pages.