You can change parameters on Apple TV for color differentiation, light sensitivity, and brightness.
Tip: To invert light and dark colors on Apple TV, see on Apple TV.
Go to Accessibility > Display > Color Filters, then on Apple TV.
Go to Accessibility > Display > Reduce White Point, then select Reduce White Point to turn it on.
Select Intensity, then swipe on the clickpad or touch surface to adjust the percentage of white point intensity.