Unscrew the metal surround from the fireplace and take it outside.
Rinse any soot from the metal surround and dry it off with a cloth. Place newspaper over the glass doors and tape them in place.
Lay the surround onto the tarp. Spray the primer onto the metal surround. Allow the primer to dry.
Shake the high heat spray paint. Spray the paint onto the surround in short, even coats. Apply two to three light coats of the paint to the surround. Allow the paint to dry.
Pull the tape off the doors and replace the surround into the fireplace. Screw it back in place.