User blog comment:Jkphantom9/RWBY AfterBuzz Vol 3 Ep. 11+12 Notes/@comment-189.134.129.158-20160219074543

Do they? The wiki says Mercury has Silvery-gray eyes but I don't see the silver at all.

His clothes are gray, his hair is gray, his name means gray, his eyes are silver. Find the error.

As for Neo she pretty much changes her eye color at will so I doubt this counts.