This is one of the most complicated commissions I have ever done, for someone I met at TrotCon Online – Starponys – who was impressed with my vector art. It is complicated not only in the alicorn-sized pony herself, Princess Skysparkle, but also the five versions Starponys requested: the one displayed above is the "base" version, bare and folded-wing versions are easily made by deleting objects or changing visibility of layers in the Inkscape file, while alternate mane colour and sparkly versions can be obtained by making certain substitutions as specified in a comment in the SVG file. It took a lot of haggling and begging from both me and them, but it got finished.
The title comes from my conception of the alternate versions being specified by command-line switches.
My commission info can be found here.