GAViewer 0.43 manual (.pdf)

5.13. CUSTOM COMMANDS 59
Figure 5.15: Color example.
below. The default colors are: red, green, blue, magenta, yellow, cyan, black,
white, grey and gray (these last two are synonyms).
The draw text in one of these colors (the default is black by the way), do
something like the following (output in figure 5.15):
Black text, \red{red text}, \blue{blue text}
\newline and a green \green{frog}.
5.12.1 Custom colors
Custom colors can be added using the newcolor command. The command
takes one argument, which is a sentence that contains the name of the color,
the red value (range: [0.0, 1.0]), the green value and the blue value, seperated
by whitespace:
\newcolor{brightpink 1.0 0.0 0.6}
Once a new color is defined like this, it can be used as any other color:
\brightpink{Some bright pink text.}
If a color is already defined, issuing a newcolor command for it will override
its current rgb value. Redefining an existing command as a color is possible
but not recommended.
5.13 Custom commands
When you want to do the same thing a lot of times, it might be useful to create a
custom command or ’macro’. A custom command defines a fixed input string,
a
b
Figure 5.16: Custom command example.