Navigating Color Space

In this informative video by Gamblin Oil Colors, the Munsell Color System is used (though for reasons that elude me, not mentioned as such) to indicate how an artist can navigate through "Color Space." There are 3 directions we can always move in to achieve the color we are seeking. 

Munsell Color System "Sphere"

If we imagine color space embodying these three directions we can imagine color space as a sphere. If you are trying to mix any color under the sun (that our limited eyes can perceive on the electromagnetic spectrum) we need to navigate these three directions. Take it one step at a time and you can match any color you want! 

Munsell Color System "Sphere" Cross Section

Here are the three options at our disposal to navigate color space:

1) Chroma/Saturation/Brightness: as we move in, towards the center, or out, towards the perimeter, colors become more or less vivid. More gray towards the center, more saturated towards the outside. 

2) Temperature/Hue: as we orbit the center our temperature becomes warmer to cooler. If you have ever seen a traditional color wheel that is sold at most art supply stores, this is exactly like a flat cross section of the 3D Munsell "Sphere." I'm putting sphere in quotes because it is semi-spherical with irregularities around the outside because some colors maximum saturation is not always the same value (lightness or darkness) of other colors, leading to a somewhat jagged looking outside to our sphere.  

3) Value: as we move up or down in color space our colors become lighter or darker.