Some colors are official, such as her skin and hair color, which I got from MLP-VectorClub’s EQG color guides . However, the outfit colors are eyedropped from screencaps of the episode so be very careful when using this as a reference.
Individual sta.sh files (including SVG and PNG): sta.sh/0jqan4wensy
Download for full size! (And to see all the details!)
Program used: Illustrator CC
More MLP and EQG vectors: icantunloveyou.deviantart.com/…