Not sure of color theory itself but there are primary, secondary, and tertiary color wheels!
All of the colors on the visible spectrum coincide with a wheel of colors, the main groups being primary, secondary and tertiary. Which colors to use in art is important for setting the mood!
Red is my favorite color, it's so powerful and aggressive I feel like. How you feel about the color next to it on the visible spectrum of light, orange? Not as cool but is okay. Do you know what wavelength the color red occurs at? Yes, it falls approximately between 625 to 740 nanometers. Oh wow that is a big range. Red has so many hues too, it's such an interesting color. Yeah, it is also the complementary color of cyan, did you know that? That's really neat, I think red has a large psychological component to it also, do you know anything about the psychology of colors? I'm not familiar with that, however did you know color theory principles appeared in the writings of two people in the 1400s, Leone Battista as well as Leonardo da Vinci? It sounds like it has such a deep history to it then, can you tell me more about color theory?
There are also definitions (or categories) of colors based on the color wheel: primary color, secondary color and tertiary color.