They say that black is slimming, and Audi seems to have taken that message to heart with their interior in the A4 Avant. The interior of my test car was, um, black. The seats are black. The dash is black. The carpet is black. If it weren't for all the light from the windows and panoramic sunroof, the black interior would have been oppressive, but somehow, the A4 manages to stay just this side of funereal. That's because of the aluminum trim on the steering wheel, over the glove box, and around the vents and center console. Those subtle reflections brighten up the cockpit considerably. The red and white colors of the gauges and information screens are sporty, easy to read and add a much-needed dash of color.