Don't discount the appeal of very tight well fitted black jeans, specially ones that have worn and faded slightly and are a little thinner than most. Light colours show well but it's amazing how people still notice a good bulge in tight black pants. I get checked out constantly as I never wear underwear (dead right Anthony1985) and find black a good colour to show in. I have dozens of pairs and am lucky enough to be able to always show the way I like daily at work etc. Guys who come into the shop always check out my bulge, and even at night it is well obvious if i am walking down a street like Regent St or Oxford St (in London).