To be honest , this can go either way if you look at it. .
Yes, Some people would think that's it strange and unusual or however you wish to think upon it, about seeing colours, genders, species, etc. in the name tag. But sometimes it seems like you might just end up having to do that because either:
o People don't take the time to actually get to know the character well.
o People fail to look in the character's bio
o People are still confused and would wish to know more.
Bio's can only go but so far and sometimes bio's might not be enough, so they'll slap whatever they can in the nametag and move on.
Some people may not see this as weird though or they don't feel like making a bio & if the information is pretty basic and doesn't really need a bio, then why not just stick it on the nametag. Of course, this is my opinion and how I see this situation as because I have come across some characters that simply didn't really see the need of using the bio at the time and it's not necessarily a bad thing unless they're trolling or some sort.
So in my opinion , I don't really mind it. If that's what the creator intended to do & is satisfied with their creation then that's A-Okay. ~?
Very Nice Topic. ^^