I'm pretty sure the igniter panel is not porcelain. And by ignitor panel I assume we're talking about the part facing forward that supports the ignitor button just below the front frame rail? It's painted like the frame.
I just checked the label on my 'parts' Jr. and, strangely, all the fields were left blank. So no help from that one.
What I've found to work wonders on the black painted frames of the gassers is some sort of vinyl or rubber conditioner. Something like Armor All. Actually, Armor All didn't work as well as some others. I forget the name of the stuff I really liked, but I think it was made by Depp. It might have been their tire treatment stuff, but I'm not certain. It made the faded black frame pieces look almost like new again - with no painting required. Worth experimenting a bit with various products. WD40 produced a nice look, too, if I recall correctly, but it dried and lost its' shine too rapidly to make it useful.