Deprecate the more unusual colors?

Currently, the defined colors include all primary, secondary, and teriary light and pigment colors. Some of these, though, are unusual color names that students don't know. This has a few consequences:

1. If students want to know all of the available colors, the answer is overwhelming and adds cognitive load.
2. If students want to fine-tune their colors, they start by looking up specific color names to memorize, when we'd prefer that they turn to deeper techniques, such as the `RGB` or `HSL` color spaces, or composition of expressions with functions like `light`, `dark`, `bright`, `dull`, or `mixed`.

Conclusion: perhaps the more unusual color names should be deprecated. This means keeping only the color names that are basic expectations: `red`, `green`, `yellow`, `blue`, `orange`, `pink`, `brown`, `purple`, `white`, `black`, and `gray` (or `grey`). Anything else could be deprecated, and eventually removed.