When I activated the light in low beam option, there is a significant greenish hue in the light; the high beam also shows this, but the hue is less apparant. I thought Cree LEDs were renowned for ther "purity" over the LS LEDs, is this just me or is it SureFire's fault? Can I ask them for a replacement? (I live in Hong Kong at the moment, so waiting for shipping may be a headache...)