SDR - Changing the video settings

In classic epg the guide is light in colour I have changed a setting where it was full of colour. What setting changings it back to full colour?
I finally figured this out not only was the guide light colour but the picture quality was off. Change the video settings to SDR. Then Hold the V.Format button to bring up the PQ settings. There is a ton of colour settings as well as many more settings. This can be set while watching a channel, this made a huge difference in picture quality.
 
I finally figured this out not only was the guide light colour but the picture quality was off. Change the video settings to SDR. Then Hold the V.Format button to bring up the PQ settings. There is a ton of colour settings as well as many more settings. This can be set while watching a channel, this made a huge difference in picture quality.

It seems the even if I change it to SDR settings are not saved on reboot. How did you make them stick?
 
If you don't have HDR TV try these settings:

In android Setting:

1) HDMI auto adoption: off
2) Resolution 1080P
3) Color 8bit YCbCr
4) Set SDR

PQ Settings:
Change all active settings to High. Sharpness to 75 and HDR (default)