I prefer the wood trim, in general. But, the aluminum trim looks great with about just any color (except the various shades of gray - not enough contrast). Beige and aluminum should both look fantastic with LeMans, which happens to be my favorite BMW color.
Sounds like a gorgeous combo to me. In fact, if you are not concerned about the upkeep of a beige interior (and I'm not saying you should be) that is definitely one of the nicer combos you can get for a three series.
I doubt you'll have regrets. I'd go for it.
2009 E91 Montego Blue w/ Gray Dakota 6AT ZPP/Logic7/Sirius/Idrive/Butt warmers/6FL/PCD/CA/6NL/Xenons
Last edited by Kilgore Trout; 01-08-2013 at 02:05 PM.