The language combines elements of Moore's earlier Forth systems and adds color as a way of indicating how words should be interpreted.
colorForth is an idiosyncratic programming environment: the colors simplify Forth's semantics, speed compiling, and are said to aid Moore's own poor eyesight: colorForth uses different colors in its source code (replacing some of the punctuation in standard Forth) to determine how different words are treated.
As the language gained utility, he rewrote his CAD program in it, spruced up the environment, and released it to the public.
It has since gained a small following, spurred much debate in the Forth community, and sprung offshoots for other processors and operating environments.
He developed a series of Forth-like languages, each extreme in its simplicity: Machine Forth, OKAD, and colorForth.