Is there anyone with experience using the Zebralight H503w? I was looking to get the H503c but am a bit wary due to reports of it having an ugly green ring around the beam. But if it is due to the construction of the headlamp and not the led itself I would assume the H503w suffers from the same problem Also any input on whether the H503c green ring is really that disturbing in real use is appreciated. The light would be mainly for indoor use. Thanks!