i have the tan interior as well. I am just doing black highlights. All the things i have done almost look stock so it is different without being very bold. I like it - plus brown is way easier to keep clean!!!
i have the tan interior also. its different and looks very clean. i suggest black, like kricci said, it just the only color that does look good and flows with the interior and looks stock and clean. you can paint a couple accents your car color, if you have a dark car. i have cypress green, so a couple things that color would look nice. i dunno about easier to keep clean, any dirt is easily spotted on tan interior, compared to black, so cleaning is a frequent chore on tan interior.