The option is responsible for this effect

When using video settings like this or worse, the color-shift while dead option does not work. It works for any setting better than in the pic.

In order for that option to work, at least 1 of the following settings have to be turned on:

  • shadows on medium or high
  • turn additive light pass on
  • turn world lighting on
  • turn ambient occlusion on
  • turn specular on
  • turn specular and light bloom on
  • turn high quality water on

The option should work regardless of video settings.