Diffractors dont work in pvp
I barely do PvP but could it be because you have turned on that feature where everybody is a human? Try playing with the settings a few times and otherwise give your character info. Race, sex, profession? you cant include too much info.
No its most likely because the pvp amulets overwrite all your other stats, including the celestial buff from the refractor which makes u shiny.
Good observation i did not think about that, i think that this trinket upgrade that changes your appearance is a good idea and as you can see its new, has its flaws and AN is testing with it which i think is great. If i were you i wouldn’t expect anything soon since this priority is very low especially with the server problems atm. Good luck!
(There are also “Hylek Hue Potions” maybe that will work in PvP?, also growth tonic!)