User blog comment:Takeshi kun21/What is your Name?: Guide to Naming Your RWBY OC/@comment-26456501-20150511124434/@comment-8182065-20150512010030

Jin works (chinese for gold if I remember). The whole name itself is pretty anime-ish though; I have no problem with that, just a common idea to go with Japanese names (because Japan is cool).

December makes me think of winter, especially Christmas, so you can get a nice color allusion by thinking of white snow or christmas colors. The last name IMO doesn't flow off the tongue too well.

Oscura sounds pretty interesting, wondering the color relation behind it though.