Amazing turn out on these! Hope my advice helped out. Wasn't sure if you had done it before so I figured i'd throw in a couple pointers.
Next for added customization you should attempt "brazing". For best results you would need a way to engrave designs with some precision. A dremel would work but not as easy to make clean lines as it would seem. But that is most likely what you'd have to use unless you had access to a CNC lathe with live tooling or a CNC mill with a rotating table mount axis, which are not typical at home hobbyist tools.
You then heat the steel to the point of being hot enough to melt brass filler metal, usually fairly thin brass wire or rods are used, right into the engravings by touching them to the steel as you heat the steel and brass sort of simultaneously with your torch. They both must be at a temp that will allow bonding of the two metals. The process is similar to soldering. After filling all engravings it will look messy with over filled brass on steel. You then need to lightly file the brass in a curving motion around the circumference down to the steel level which is easy because brass is softer than steel. Use needle files they will work perfectly. After this, sand by hand using course down to fine grit, make sure to sand around the
mod by wrapping the paper on the
mod and turn (I'd put the mod end to end in a vice and do something similar to how a shoe polisher wraps a cloth around a shoe), not top to bottom, this will make polishing or buffing so much easier and will look way better. After everything is sanded smooth the steel should look clean and silver again with brass (or copper would look great as well) inlays, you then heat color as you did before, this should leave the brass or copper unaffected. I'm pretty sure buffing can be done either before or after coloring, try both methods to see what works best.
Practice this on plates of steel before attempting on your mods as its not something that can be fixed afterward.
It's a lot of information and seems like a ton of work but if you're a hobbyist and want a challenge the custom results will be priceless.
The appearance of brass engravings in violet and blue stainless after sanding and polishing is astounding.