Inspired by @kalemandra; introduced ColorChallenge to Gab

Hive account@kalemandra, I took your #ColorChallenge idea and spread it to Gab.ai:
http://gab.ai/S2/posts/23542000

Your original ColorChallenge post:
https://steemit.com/colorchallenge/@kalemandra/new-colorchallenge-for-all-steemians

Thanks for the inspiration!