I only got my car two days ago, so I can't speak to the longevity of the interior or such. My first choice was the black with black, but it wasn't available as I wanted it (IS250, AWD, Nav, no Luxury pkg). I would have also taken the blue onyx, tungsten pearl, or even the gold if it came with another interior besides cashmere (I thought cashmere was too light).
I ended up with the Flamenco Red with Sterling leather. I gotta say, I couldn't be happier in retrospect!!! The Flamenco Red is the nicest color I have ever seen on a car, period. You *need* to see this color in person; as with all the colors in the book, the color swatches don't do justice. The red changes color from different angles, and int he sunlight is nothing short of amazing. The one thing that every single person who has seen my car has commented on is the fantastic color! Make the dealer bring one in to show you...!
I _am_ happy to see nobody else listed my color combo, makes me feel unique! That and the fact that you never see these ISx50 cars on the road!
I'll have some pics up online in the next couple days...
Mike