I've not had any issues with jeans, pants, shorts, or basketball shorts. No matter the color, light lbue, dark blue, black, gray, tan, orange, green, etc, etc. So far, it's held up pretty well. I've only had mine for about a month though
I have had the almond interior for 4 months now and I haven't had any noticeable stains. I give it a good wipe down every month or so to get rid of dirt and it still looks great. The only thing i would be concerned about is brand new dark jeans that have never been washed yet and might bleed. My dark jeans have never cause a stain tho.
Yes, I've been having some problems with blue jeans leaving a blue tinge on the white leather. Normally it's just restricted to the right support since you rub across it getting into the car. However, I drove from Germany to the UK and back last week (1300 miles) and there's blue all over the base. I use Autoglym leather cleaner and it comes off very easy, just a bit annoying though.
Had the car for 6 months now, don't really carry passengers or put anything on the seats, but the driver's seat is still night and almondy. I haven't wiped the leather down with any cleaner yet or anything. Had a couple tiny smudges from some loose dirt that got on it, came out with a lick of the finger