Repairing seat tear in center of driver seat- permatex repair kit or...?

I`ve used the Permatex kit before on a blue interior. It was on a dash pad and not a flexible area like a seat bottom. It took me about half a dozen times to get the color close to correct and the patch was still visible. If I were you I`d follow your other suggestion and install a piece of material below the torn area and glue the material down. Once you`ve done that then try the Permatex patch over the repair.