Thank you for sharing your views with me.
By creating this mod I tried not to get away from the visual rendering of the original textures not to denature the game, and thus the metallic textures are certainly more crisp and detailed, but keep the same tones and colors the original version (except for grid shelves with original rendering is awful and I decided to change to something more "noble").
However, if this mod in its current approvals knows a minimum, I would not hesitate to propose other updates further improving textures, including metal.