Thanks Butch, but what do you do to overcome the brown on brown issue? My son is 21 and just started hunting this year. He wanted nothing to do with it while he was growing up (just wanted video games and music). So, now that he's out of the house, he's found out that beef is too expensive...so the hunting begins. Also, he's done a paper in college on colorblindness and I believe that site was one of his references.