Colorforth is a Forth written by Chuck Moore, the guy who created Forth in the 70s. In this quote from Colorforth site (http://colorforth.com/cf.htm http://colo

Colorforth is a Forth written by Chuck Moore, the guy who created Forth in the 70s. In this quote from Colorforth site (http://colorforth.com/cf.htm http://colorforth.com/cf.htm) , read word as function. >In Forth, a new word is defined by a preceeding colon, words inside a definition are compiled, outside are executed. In colorForth a new word is red, green words are compiled, yellow executed. This use of color further reduces the syntax, or punctuation, needed. It also makes explicit how the computer will interpret each word.