Dying Firerock crafted items

I noticed you cant dye shields or weapons crafted with firerock (didnt try armor) with the cycling dye tub or even tokuno dyes.
Is there something you can use to dye them or are they undyeable. If they are undyeable, any chance
we could see an option to dye them in the future?
Is there something you can use to dye them or are they undyeable. If they are undyeable, any chance
we could see an option to dye them in the future?