Just purchased the Radar Team USA with blue iridium lenses. When wearing the glasses, as I tilt my head down (looking through top of lens), everything looks blue. As I tilt my head up (looking through the middle to bottom of lens), everything takes on a yellow tint. When I take them off the lenses appear to be one consistent color from top to bottom. Is this normal? I expected my view through the lens at any angle to result in my field of vision remaining the same color, or tint. Any insight would be greatly appreciated.