Board Thread:Off Topic/@comment-24993958-20160721222431/@comment-25279497-20160729171238

IRC (mind you, this was an argument made somewhere else as well not original being mine and quite a while ago) that no  characters have more than two colors. Of course, this is an invalid argument given the present counter evidence of Neo and Neon.

The Glass one was referring to the fact that glass is transparent but can be modified to appear blue, green, red, etc. Which can work for "make you think of a color" cause.