[LingLing]

I love my leather seats in the Acura. I've spilled a few times and it just wipes right up. You really don't have to worry about stains either (I have black interior though).
One thing to keep in mind is different car brands will have different quality of leather. Honda leather is pretty damn good as long as you condition it once or twice a year. But their seats are fairly stiff. Kia leather is shit, seats are hard and it gets marred up pretty easily and it doesn't feel like quality hide. Newer Subarus seems to have great feeling and looking leather as well. But newer Subaru's are expensive.

Yes, they'll be cold in the winter, and hot in the summer, but I've never regretted having them. The only thing I don't like is how much I slide around on the seat during hard cornering.