Referencing the 16 "Standard" Colors

The 16 "Standard" colors are specified by a color number, as shown in the following illustration:

As of Version 10.2.18 and later, each of these 16 colors can usually be expressed either as a number, or by its name:

Number	Name
0	Black
1	Dark Blue
2	Dark Green
3	Dark Aqua
4	Dark Red
5	Dark Violet
6	Dark Yellow (or Orange)
7	Gray
8	Dark Gray
9	Blue
10	Green
11	Aqua
12	Red
13	Violet
14	Yellow
15	White

Notice that the first letter of each word in the color's name must be upper case.

Example:

Call solid color (Dark Green)    
Call solid circle (300, 200, 100)

The use of color names is intended primarily as a convenient way of directly specifying colors to tasks and functions in the system library (as was shown in the above example). However, when used under other circumstances, a color's name might generate an error message. For example, the statements:

Set c = Dark Green  
Call solid color (c)

will not compile (unless the "c" container has been previously defined elsewhere in the program). If you encounter any problems when using a color's name, simply place a pair of parentheses around the name:

Set c = (Dark Green)
Call solid color (c)

In fact, a good "rule of thumb" would be: Whenever you specify a color by name, always enclose the name in a separate pair of parentheses (even when it might not be necessary to do so).

Examples:

Call solid color ((Dark Green))  

Call rocket (300, 200, (Red)) @  

If (z = (Blue)) Set z = (Yellow)