Powder coated my AirGap

I wonder if it will yellow with the heat like clear gloss paint over aluminum. I’ve cleared them and painted them. The clear gloss has always yellowed some but the colors seem to hold up better. This has only applied to painted manifolds not powder coated. That really does look awesome with that black block and polished valve covers.
I hear you about the clear yellowing.
I asked the Gent that ran the shop and his reply was that he did not believe it would yellow as he baked it at 450* F. We will find out in the long term.
I have considered clearing the valve covers. Thoughts?