It may be obvious to everyone, but, the darker the jeans, the more likely they are to rub off on your leather. I don't wear my dark jeans very often because I don't want them jacking up my oyster leather. I wear medium-light ones now and I'm not getting any transfer. I understand though that the color spectrum acceptable is wider for me, being a girl and all.

I wear jeans every day. I wouldn't fit in with the other developers if I didn't wear jeans! Heck, mine are high-class because they don't have non-designer holes in them.