Odd question, but when you're shading your pictures, where do you put the "true" color of whatever it is you're drawing? The parts that are in light are brighter than the original color and a bit of a different color, too, based on the source. The shadows are darker than the original color and more based on the undertones of the object/hair/skin or whatever, so also not the original color. I've noticed you have a kind of gradient between the colors to make them harsh but still blend together, too. Where does the shade you're basing these off of come in?
Sorry if this doesn't make sense 🙏 I'm trying to study art styles I like to figure out how to improve my own drawings, and your page is a huge inspiration for me.
Hmmm If I understand correctly, you're asking me why you can't color pick the base tones as shown below from anywhere in the picture, right?
That's because A) I know these colors, roughly, by heart. So, Instead of picking them from the original drawing, I did what I always do and selected them manually. But also - and what I think is actually relevant for your question: B) A lot of processing takes place OVER these base colors! Let me get the spherical piece of Bhaal's sacred flesh to explain.
Here we have just the base color by Itself. Next, I add a light wash of the undertone to places like the face, ears, hands - basically anywhere the body has a tendency to become flushed. The intensity of this depends on the person and skintone, and in DU drow's case I tend to make it pretty prominent.
Next, I add the "overtone". I don't even know if that's the right term for it, but it's something that happens with very dark skintones because they tend to reflect more light. With my character, this color is almost always blue for stylistic reasons.
The base tone is still there, even though you probably couldn't easily color pick it anymore. It's doing it's quiet, thankless job: being a base!
As if that wasn't enough, out comes all the fancy stuff:
And I can get even sillier than this with more layers of shadows, multiple light sources, highlights, and so on. These colors here are just examples too - they can be pretty much anything in a similar level of brightness/contrast. All elements of the art that I want to render get this treatment or similar depending on their texture, not just the skin, so you can probably guess how they would get "lost" despite being used as a base.
Hopefully this clears things up!