so, a while ago there was this 1.12.2 mod that added silver items based on the texture on ravager armor and pillager belts.

I think this mod should take a similar approach to silver. sure, there's no texture of it being blue but you could just use the color slider to do that.

notice the armor on the ravager

notice the belt buckle and shoulder pads.

Since the uncorruptible nature of silver, we concluded that this must be iron because it wouldn't make much sense to have something incorruptible on corrupt creatures.
Sorry