Tinting Side Mirrors

Is there a subtle tint that will reduce the glare from the side view mirrors? I do the majority of my driving after sunset and the glare from cars with HIDs and SUVs give me a headache sometimes. Is there a subtle % that I can do that will not hinder my visibility too much? I wished it had auto dimming side view mirrors but you can't have everything in this price point. If not tint, may be some other product that might work as effective. I see some plastic-dip on light coatings will achieve the same result. Good or bad idea?

Thanks