I have an LG G2, so maybe it won't work the same, but I also couldn't stand the new color and found my way to this forum. I may have found a solution, so I came back to hopefully give some reprieve to everyone's rods and cones... Try going to Settings>Accessibility>Color Adjustment. From there, you are supposed to slide your finger to change the contrast. I have not figured out how to get exactly the colors I want, BUT I do know that just by playing around with it, I have gotten rid of the hideous orange! Let me know if it works for you!