Hi Gerald, they *should* be available, the previous owner put a new brown one in my 80SC. Have you tried Auto's Intl, World Upholstry, Original Fit, etc?
Found this, they say colors available
http://www.worlduph.com/porsche5.htm#911%20late%20top
Coupe headliners are made from white or black perforated vinyl, windows must be removed for installation. Colors are available
HEADLINER: Coupe #911 1850....$105.00
HEADLINER: Car with sunroof #911 3350 $105.00
cheers
-Brad
80SC