bool bOverrideLightColorsWithFogInscatteringColors
Whether to use FogInscatteringColor for the Sky Light volumetric scattering color and DirectionalInscatteringColor for the Directional Light scattering color. Make sure your directional light has 'Atmosphere Sun Light' enabled! Enabling this allows Volumetric fog to better match Height fog in the distance, but produces non-physical volumetric lighting that may not match surface lighting.