Silver trim with beige leather??? Doesn't sound right. Silver trim with black leather maybe. I think the beige leather would look nice with the dark wood, but that's just my opinion.

Silver/Blk gives it that sport look. Beige/Dark poplar gives it a luxury look.

I recently switched mine to the titanium with blk leather, and I love the look. In fact I'm doing the same on my 540i as well.