How crazy is Obama's ban on green clothing?

In his current tour of the Middle East Obama’s campaign has banned the wearing of green clothing. How crazy is that? And no one has a coherent reason why they did it!
Green is a color that is associated with Islamic culture in a very positive way… it the equivalent of not wearing a lapel flag pin in America? Please help me out with this…..I’m afraid it will make some people question his judgement.