About Color Palettes
The default color choices available to you in the Layout Editor and the Property
Palette are derived from the current color palette. Color palettes can be edited
and saved to the file system.
The default color palette has the following characteristics:
- The upper-left region of the palette contains 16 commonly used colors with
the following names: black, white, green, darkgreen, gray, dark gray, cyan,
dark cyan, red, darkred, blue, darkblue, yellow, darkyellow, magenta, dark
magenta.
- The lower-left region of the palette contains eight empty cells into which
you can place custom defined colors.
- The next four columns are composed of varying shades of gray. Each color
is named 'gray<value>', according to its percentage gray value.
The values range from 4 to 96, in increments of 4. For example, valid color
names include 'gray96', 'gray92', and 'gray4'.
- The remainder of the palette contains colors specified by varying percentages
of red, green, and blue (RGB) components:
- The percentage values for each red or green component are:0, 25, 50,
75, 88, or 100
- The percentage values for each blue component are:0, 50, 75, 88, or
100.
- Each color is named `r<value>g<value>b<value>',
according to its RGB values (e.g., the color that is composed of 100%
red, 88% blue, and 0% green is named `r100b88g0').
- Except for the color cells described above, the palette is composed of five
major regions, each containing 36 colors in a 6x6 arrangement. These colors
are defined by the following rules:
- The red value increases as the colors progress from left to right within
each major region.
- The green value increases as the colors progress from top to bottom
within each major region.
- The blue value increases as the major regions progress from left to
right, with all of the colors in a single region using the same blue value.