wedding band for a twist engagement ring?

FH & I started looking for wedding bands and I am having a really hard time finding a wedding band that looks good next to my engagement ring, which is a platinum Hearts on Fire Simply Bridal Twist ring (http://www.heartsonfire.com/shop-jewelry/rings/engagement-rings/simplybridaltwistsolitaire.aspx). Although my e-ring is plat, I actually really love the classic look of rose or yellow gold for a wedding band. I tried several on and the mixed metals is just not looking good unfortunately. So I'm willing to get a platinum wedding band, but everything looks so bad next to my e-ring. Does anybody have any suggestions for wedding bands that might look good with this type of e-ring? Does anybody else have a yellow/rose wedding band a white e-ring side-by-side? I'd like my wedding band to be completely plain - no diamonds or designs. Thank you!