Hi BOBSUMMERS, There are a number of spray paints which cover stains and match the ceiling tile color.If your tiles are white (not off white) then Kilz® is a reasonable substitute for a ceiling tile spray.
Dear Bob, If you contact Mc Master-Carr Inc., ask for their ceiling tile paint. It comes in a spray can, matches the white exactly and two coats cover most stains. You don't even have to remove the tiles. The can shoots up. Len