That car looks great. As far as our older leather, there was a thread in the maintenance forum. I'll try and track it down.

 

There are indeed many threads on ClubLexus.com on leather care, but also check out:

http://www.autopia-carport.com/

...which is where fanatical detailers for all sorts of cars hang out.

One thread on that page recommended products by http://www.leatherique.com
quote: "Leatherique is amazing in restoring older leather. The leather just seems to drink the stuff up". Never tried it personally, though.