Paint Ash pans?

I was just wire brushing the loose scale and crud off the outside of a couple ash pans, getting ready to spray them with WD-40. While I was doing it I got the idea to maybe paint them with high temp paint. Do you think that's a good idea or should I just go ahead and spray them with WD-40?

I would paint them with the high temp. paint.

I just do WD-40, but hi-temp if ya decide to paint them.