I love these things/  Got a better quality one a number of years back from off of EBAY.  It came with a crummy 6500K tube, so I replaced it with 4100K and I like it.

Personally I hate powder coat😬, especially when it starts lifting after a few years of the elements!
For all my lanterns in use outside, I have always used auto paint
My GEC on the front of the house was originally moulded in a creamy/beige fibreglass, which after years of use outside starts to expose the glass fibre in it!
I re-sprayed the whole thing using a ‘Rover’, (British car company), beige colour that was similar to the original GEC colour! 😀
It’s still looking like new today 😎

You can try. Remove the front cover so the tube is not enclosed, it will run much cooler. And add a reflector inside to cover all plastic surfaaces exposed to he tube. This can be with Aluminum foil glued in, i wonder how reliable/long lasting would be just spraying its insides with bright metallic color or similar spray. (Disassemble and mask it properly)

Asking because I need to redo the paint job on my OV-25. Going to go hammered silver color cause that is the original paint that Westinghouse used. Is it a good idea to do that?

If you'd like to actually see the unreleased Tru-Tone products, see Dan Neuman's video.

Any improvements I could make to it?

https://youtu.be/oy7BrKNmZAQ?si=Jm5p6lLofUx1ZuA9

Had few of those at my previous work. The entire lamp canopy and cover (they have cover over the tube) are made of plastic. They become discolored, if not borderline crispy, within the lifetime of the 1st tube

Ok for low hours use, but don't expect much from it if left on all day like it would in a common workshop environment

I am using the parts from the broken ones (arm, magnifier lens) to repair the proper ones with the metal canopy and bare tube

Would be really cool to attend.. but simply too far from me.

That’s cool! Do you have a picture or link?

Here you go Circline lamp