I have tan interior and I when I got the max from my step-dad the interior was horrible looking. I can clean just about everything but the seat belts. I am pretty sure the original color of the seat belts was tan, but now is a dark grey. Does anyone know how to revive them back to their original color? Thanks

 

I don't know... all the seatbelts I've ever dealt with are black or grey.

Try soaking and then blotting with an upholstery or carpet cleaner maybe.

 

For really bad cars I've done for others I've used a combination of diluted Simple Green and steam cleaning. Happens a bunch in Hawaii where 1. it's hot, 2. people sweat a lot and 3. guys don't wear shirts. Good luck.