Spray paint for a heater

We have a place heated by just electric panel heaters.

Some of them are now 40 years old and, although not terrible, could do with a tidy up.

I see there’s specific “heater paint” available, is this just enamel paint or something specific that I need to use?

(If I can use any enamel.paint I may have more colour choice)

I used high temperature radiator paint on our storage heaters. Freshened them up and they look good.

I used car exhaust paint on our LPG gas heater a few years ago. Worked well.

I recommended red but Her Indoors insisted on orange.

I duly painted it the requested colour to which she commented – “Oh! It’s very orange isn’t it? I thought it would be more like a Burnt Sienna.”

I pointed out that when boy racers bought exhaust paint for their souped up Corsas they were, generally, looking for more of a bright orange than a Burnt Sienna.

“We should have painted it red.” – was her response.

Making it seem as if, somehow, I was complicit in choosing to make it bright orange.

Stove paint was my first thought.

Like this:

https://www.glowing-embers.co.uk/stove-paint-aerosol-cans-various-colours

Depends how hot they get. Sure if it’s like log burner hot you’re going to need stove paint, but I went to buy radiator paint the other month and the woman in the (trade suppliers) paint shop said modern water based is fine, it doesn’t go yellow because not oil based.