I don't know about acquisition of the Danskin that Lauren mentions (though I've seen it on her and I live it very much), but the cheerleading vendor than Jenn mentioned seems to have some metallics in shorts - not just gold and silver, but also red and blue metallic! Ooooo! Shiney!
OH! Silly me! I just looked at the (official) Danskin site and lo and behold, right there on the site are their metallic boy cut shorts. AND they are on SALE! For
$10 (not including the shipping)!!! Also available in silver, red and blue. Guess I'm going to be checking out the shorts on their site for the troupe's newest costume.