When syntax coloring turned on in the source window, comments will be colored red, commands will be colored blue, and the symbols $, {, and } will be colored dark green. A few users may wish to change these colors. Each color is determined by setting its red, green, and blue components; these components are real numbers between 0.0 and 1.0. Suppose we wish to change the color of $, {, and } to bright green, a color with components (r, g, b) = (0.0, 1.0, 0.0). To do so, open the Terminal window and type the following commands
The corresponding preference items for comments are commentred, commentgreen, commentblue; the items for commands are commandred, commandgreen, commandblue.