I ask historical about shines , so they say armours MUST shine , because in ancient times use vinegar and varnish. Vinegar poured in a flank and added sand, then its twisted and the chain mail was cleared. It was done first of all certainly to destroy corrosion. But also appearance mattered. Also it is frequent for a full armour the varnish, including color(and black) was used.
Anyway graphical engine not support ( yet
) shading for environment shader . So in night and in close buildings shine from full plate and helms is too match . I hope in next vers they make something about this