RGB gamma causes color change

In a video of a shorebird in the water, it was a very dull day, and there is not much contrast.  I applied levels and was adjusting the RGB gamma as I have in hundreds of other videos.  If I move to the right, it is pink, to the left green.  Never had this happen before. I first had shadow/highlights which improved some.  I found that if levels is above s/h, this happens, but if it follows then it doesn't change the color.