Late night host Stephen Colbert trolled Prince William and his alleged affair with neighbor Rose Hanbury, RadarOnline.com has learned. As conspiracy theories swirl about William’s wife, Kate Middleton, rumors he cheated with Rose have been revived as possible explanations for the royal family’s bizarre photoshop crisis and alleged missing princess. As OKMagazine.com reported, in the opening monologue for Tuesday’s edition of The Late Show, Colbert dove head-first into rumors about William and Rose. The Late Show host noted that “internet sleuths” speculated Kate’s sudden “absence may be relate…