I think I like this version of the kobold as playable race more than Volo's. Partially because I can access this super quick and easy without having to worry about WotC and intellectual property. I think I'd rename Brilliantscale and Shadowscale, giving the latter proficiency in Stealth.
Original at https://www.reddit.com/r/dndnext/comments/3pewed/homebrew_kobold_pc_race/ (main image there is old, see the Since Been Reworked link later) https://awoo.space/media/sVtfKdcq-y8s9CRITz8