Beige is not a popular choice - based on the 2010 stats there was like 3300 made with the beige interior - so you will def have a rare breed!
I have the beige leather and I love it - it's very uncommon and it lightens up the interior nicely. I don't know about on a CGM but it looks hot in my RJT
If that's what you want then go for it - I was going to get all black but liked the beige a lot better when I found my car on a lot.