[Mark Salvetti]

How about pinstripes?
http://forums.pelicanparts.com/porsche-911-technical-forum/900205-1978-911-sc-seat-details.html

You should be able to find an interior colors brochure on a website somewhere. There is a 1978 for sale on eBay now: https://www.ebay.com/itm/297138346057

Here is a 1979 brochure, probably the same as 1978: https://www.turbosition.com/download.php?file=/media/brochures/Porsche-911-SC-Turbo-Farben-und-Innenausstattung-1979.pdf

Mark