Does this type of product esists for car seats. I want to color the faded cracks on my seats. Does anyone know where I could get any type of gray shoe polish? suggestions? thanks

You can get colored shoe polish and leather color intended for shoes at places like Walmart or Walgreens, any comprable business should have something. Whether that'* good for your seats or if you can find a color match I have no idea but it'* a start you could look into.