I've been very happy with the Sigma 19/2.8 and 30/2.8 lenses on my a6000. But one thing I've noticed with night shots is green often comes out cyan. This is especially true in urban shots with traffic lights. When I shoot the same night scenes with my Sony 50/1.8, green lights come out green. Daylight color with the Sigma lenses is more accurate. Any suggestions for getting correct night color in the camera with the Sigmas? Thanks!