Question-Wristbands

[PIAA REF]

My question is it legal for a player to have a color other than white,black,biege, or predomin. jersey color medical tape wrapped around his or her wrist. I have been seeing this more and more and some have been using it especially on the boys side. Also sometime sticky prewrap or something like it may be used. Would you consider this a wristband and make it follow the rule or would it be a medical device and then be legal. Also what if it is a legal color like black but other players have white head/wrist bands on then would it be illegal. Any thoughts or if there is any documents that site a rule that would be helpful too.

Thanks