Before we get into how to correct color we need to discuss basic color theory.
Understanding color theory will make corrections so much easier and more fun! It's like a puzzle just waiting to be solved.
Colors are divided into several categories that assist with mixing and creating new colors:
Primary colors are the base for all other colors and cannot be created by mixing other colors together.
Secondary colors are created by mixing 2 primary colors together.
Blue + Yellow = Green
Red + Blue = Purple
Yellow + Red = Orange
Mixing a primary color with a secondary color creates a tertiary color.
For example, mixing blue (primary) with green (secondary) creates teal (tertiary).
The color wheel is an artist's resource for easily observing primary, secondary, and tertiary colors all in one place.