>>13859217I usually create a new layer for each. I dont use a darker shade of the same colors. I let the Multiply effect in the layer tools do that for me. I simply select what color mood I want to give off. Depending on the time of day or location can vary the color of shadow. But generally shadows are a hint of blue or red. Red helps to show Spectacular Scattering with fleshy subjects so it looks like its absorbing some of the light into the bodies blood.
But generally youre free to chose the color that you think fits the mood of the picture. If youre unhappy, it being on its own layer allows for you to use the Hue/Saturation stuff to always change it.
Highlights are the same way. But I use Overlay instead. It works and looks nice although not everything reflects the same colors the same, but in general, people get the idea. Unless you want to test out colors on each to make it perfect. Same colors apply to lighting. Usually reds and blues. Movies do this alot with Cyan and Orange. It helps to bring out things to POP out from the background or make things more noticeable on the body, such as an overlapping arm or the pose fingers make. This can also be used to help bring attention to things if applied to backgrounds as well. You can always use creative license to show highlights drawing towards an important part of the piece. They do this subtly in animations storyboards when there is a lot going on in the scene so you focus on what they feel is important
