User blog comment:Observer Supreme/Germa 66 Sanji/@comment-31076196-20170402192133/@comment-25400375-20170403005013

Yellow has been used to describe cowardice. Not to mention the "Yellow Peril" from centuries past. I guess I could replace "Sky" with "Airy", but that could be used as an insult. You know, airheaded?"

Still, I guess it's something to think over.