>>1679602ribble has relatively affordable titanium bikes. the head badge is just a sticker which can be removed or if you buy a frameset it's a separate piece which you can leave off or put on after the build is done. the downtube and seat tube graphics could be sanded and polished out.
https://www.youtube.com/watch?v=vcOKfTnRIIIif you've done the research on the anodizing, it could be a neat project. i'd be worried of it coming out uneven like i've seen on exhaust tips on cars but that could also be an intentional design choice to make it look more organic.
https://www.spanner.org.uk/2017/11/happy-finishes-and-the-tie-dye-vomit/ 