And you can strip the anodization off with lye, easiest with EZ Off with lye. Not the stuff without it. Wear gloves, long sleeves, and eyes if you do it outside. In your oven if you can't, since the over spray will help clean your oven if it needs it, my door windows usually have a coating on them. But wear some PPE, bare minimum what I mentioned above.
Sodium hyrdoxide is no joke, if you feel it burning - WHITE VINEGAR! Water helps heat it up quicker!
And don't let it in your lungs or eyes either. Same for your mucas-filled cavaties (nostrils). I'm sure my lungs aren't any the better for the crap I've breathed in at the "request" of Uncle Sam.
Sodium hydroxide is/was used as field cauterants for severe bleeding that needed to be stopped ASAP. And to convert (saponify?) fat/liquids into hard soap. It attacks organic material, which is why it loves our fatty bodies, and why we want to keep it away.
Barring stripping and reanodizing, there are black-only pieces you can buy from Fysetc, you'd have to strip, print, or paint the red pieces as far as I've seen, and I've looked a lot as I'm not a red fan either.
https://www.fysetc.com/products/new...d-aluminum-alloy-frame?variant=43854810579119
I also remember Funssor, I think that's how it's spelled, had "natural", but clear-coated (I may be wrong about that coating?) bare aluminum.
Sorry for the wall of text for lye. But, seriously, it is no joke.