Silver would look good.Used to be able to get vinyl in carbon fiber pattern.Came in several diff colors,have to see if I can get some of that in silver.
I'm just using cheap vinyl for now.the black/grey I picked up @ Joann fabrics,1/2 yd each less than $20.If you dont have a heavy sewing machine,probly wont be able to feed the fabric,or handle the heavy upholstery thread.There is some nice vinyl that stretches in 4 directions,reg vinyl stretches in only one.You use that and apply some heat,the rear seat can be covered with no stitching,the front will still need to be stitche around the "horns"at the gas tank."Allsport"is the brand name.
I'm looking for another seat so I can work on one without tying up my ride.