i know you posted it like aaaages ago, but there is a site that i find very useful in downloading youtube videos of U2 called Download Online Videos Save Direct Easily - Savevid.com :)
it's a little gem
much love
bono has an allergy to pigments in things like red wine, he is indulgent and so wears his glasses to cover up the allergy, it has a special name and basically it turns his eye red...it was in an interview somewhere i found it interesting :P he said he didn't want to freak people out haha