..considering tan-coiored, after market leather seats for my silver Prius. Anyone think this will work?
I don't think tan works well with silver (Bisque isn't available with silver for this reason). My favorite interior colors with silver are red and blue so go for one of those if you want to be different.
I don't think that would be a good option, tan with silver. It would just accentuate it being an after-market product and perhaps look like you got the leather "on clearance" or scrap. If you want light-colored seats, stick with the light gray leather.