Considering they have different colour weapons of a same version, like Mystic weapons(blue) & CoE dungeon weapons(red) and Asura cultural weapons 1(blue) & SE dungeon weapons(red) I don’t think they will make weapons dyeable.
Well most of those weapons (At least when it comes to the swords) had their blade dyed though? If people wanted the hilt’s dyed I could still see that possible? :o