The dealer offered it when I purchased which they've not done in the past - explained it's a new type of material. It does cast a cool glow into the vehicle and the moon roof has a factory tint that changes levels of shades -- really cool. Convenient dealer offers tinting before you drive it off the lot now - not sure I'd ever pay for their interior protection package - my dark jeans seem to fade on the seat but it does clean off easily - should not have steered away from black interior - my bad!
Oh well - back to driving my '57 T-Bird and I'll once again appreciate the finer things in life like auto air conditioning, tinted windows, Sirius, etc., etc. I'm too afraid people will damage it (again) in parking lots so I just hide it away.