Hi Phantast,

My first guess would be skylight blue. Is the sky map set to grays? Which lighting mode are you using? Using the latest beta patch? Any default sun, or only custom light sources?

Altogether, i see 13 settings that affect color, so you might have missed one?

1. 1 - In Sun (Sun tab of atmo editor)
2. 5 - In Lighting tab of atmo editor (if GR used, then we count 'Bias')
3. 1 - Sky tab, sky color map
4. 2 - Fog color, haze color
5. 1 - Effects tab, environmental map image.
6. 1 - Light and shadow editor 'Variable color'
7. 1 - Light source color
8. 1 - Volumetric

HTH