Food for thought:
Tan is the most common interior color and red the least in my experience (many shows, junk yards, craigslist, etc) Blue is in the middle.
Personal preference of course as any of the three look good in a white car. If all you need it seat skins, you can get those made at a reasonable cost or look in the JY as northern cars, the interiors stay pretty nice vs. our 'baked' interiors down south...