I've got an 03 lcr in yellow, the paint's not bad at all, just a little bit really, but I've found that polishing it with autoglym super resin polish, then sealing the paint with high gloss paint sealer, and then waxing it with a good carnauba based wax (I use dodo juice, they do one that's specifically formulated for yellow and orange cars), has helped wonders!! I'm planning to clay it in a few weeks too!!
I did clay mine a few months ago and it did bring up the paint finish but not the colour match although like i said for a 01 its not to bad and after a polish it looks a lot better.
If i can find a 05/06 in yellow then i will go for it again but the best i have seen so far is red.