I am making a scene with a guy standing in the window in room with Volume Scatter effect(It is not set in world settings but in a cube surrounding a room). And everything is little bit grey (as it should be) except for hair. Light source is a spot with constant strength value put in front of the guy. Hair have dark brown color on hair shader. I think that they should change color as well. Why do you guys think? Is it my imagination or something is wrong and needs tweaking?
And, yeah, I am beginner.
We see no scene settings !
We see no render settings
We see no material nodes !
We see no blend file attached to your post !