Older posts on the subject:
Orange DRY - https://budgetlightforum.com/t/-/6366
Dry Orange - https://budgetlightforum.com/t/-/6710
Baked Ultrafire - https://budgetlightforum.com/t/-/21837
I've done a few cheap hosts like this and got good results using the broiler setting on a toaster oven. Various shades of copper/bronze. I attempted this using a light blue anodized host (the S-R6 host Manafont sold) and it didn't change much. The color lightened slightly but that was all.
I've also used this technique to color-code the bezel ring on a 501b to differentiate between hosts.