Thanks a bunch for the info!! I knew it was on platinums only and was looking at a black exterior. Just wasn't sure about the headliner color and if it was an option.The RR interior is only available in the Platinums, and then in only a couple of exterior colors. Look at the 'Notes' in the brochure back in the paint section.
The interior from the midline down is Black, except of course for the RR leather seats. Above the midline is either RedRock plastic (mainly the dash) or satin 'aluminum'. I've a couple of shots of the dash (attached), and the A-pillars appear to be Beige (Tan), and I'm thinking the headliner is the same.
There is usually at least one (RR interior'd car, that is) for sale on Autotrader, and they commonly have good pictures.