I’m KY and I have a question regarding colour hue and saturation. How do I determine if a color on a particular surface plane of any subject matter should be more saturated or less saturated? I mean, the value on the shadow side would be darker, but what about hue and saturation? For instance, when a light is shone on a person’s arm such that there’s a light side and a shadow side, how do I know if the shadow side should be more saturated or less saturated, and of what hue? Could you please explain the underlying principles guiding this? Thank you!