You can buy spray cans at K-Mart, etc. The brand is SEM.....the shade of gray used in '86-'88 Fieros is common enough for them to have......no need to have anything custom mixed (I do this to match the '88 tan stuff).
I believe the actual color name is medium dark gray, buy I'm not positive.
BTW......you will need to prep the plasic before you spray it. SEM also makes a plastic prep spray. If you don't prep it (gets off old grease, armor-all, etc) then the new color won't hold.
[This message has been edited by mrfiero (edited 02-09-2001).]