Drag the bottle of dye to the helm and change the helm color. Drag the dye to the crest and change the crest color. Heck if I know. Such decisions belong with the Realm Team. Another problem with these concept helms is beards.
Beards are a single graphic element.
You cannot use only a part of the beard. It's all or nothing. Could look kind of silly having beard sticking out the sides of some of these helmets. Do with the beard what is done with the hair, remove it when the helmet is worn. This would work but some folks would be less than happy to see their beards disappear while a helm shows the majority of their face.