Allen Iverson has been rocking the white sleeve on his shooting arm for nearly a decade now. It's brilliant.
Why is it brilliant? Most professional basketball players are black. The whitest player ever, Shawn Bradley, is no longer in the league, and even his (oft-used) fouling hand is darker than snow white. If you are a scorer you will draw extra fouls by wearing a snow-white sleeve. The contrast makes shooting fouls more obvious. Plus, most shooting fouls occur below the wrist, so there is no disadvantage in terms of getting called for more fouls.
So why is AI the only guy who has figured this out? I expected an outbreak of white sleeves back in 1998 or so when Allen started sporting his.
Carmelo apparently had a talk with AI, as he added the white sleeve recently. The only problem is that Melo added it to his left arm, though he is right-handed (like Iverson).