Secure Global Desktop Administration Guide > Applications, documents and hosts > Terminal emulator color maps

Terminal emulator color maps

SCO Console (ANSI) and VT420 terminals support 16 colors. The Secure Global Desktop terminal emulator uses a color map to determine how these colors are presented in an emulator session.

Note Wyse 60 terminals are monochrome. You can only switch the background and foreground colors (black and white) using the color map. However, you can map character attributes such as bold or underline to any of the 16 logical colors supported by the terminal emulator.

The color map maps the logical colors Color_0 through to Color_15 (inclusive) to colors and the RGB values that Secure Global Desktop uses to represent those colors. The default mappings are as follows:

To alter the defaults for a particular application, create your own color map and specify it in the application object's Color Map attribute.

A default text-format color map /opt/tarantella/etc/data/colormap.txt is provided.

Examples

For example, you might want to make the color red brighter. To do this, you would change the RGB setting of Color_9 to 192 0 0.

Or, if you wanted items that appear in light green to appear yellow, you would change the RGB setting of Color_2 to 255 255 0 (the RGB value of yellow).

One common color change is to switch the foreground and background colors between black and white. When you do this, you are not changing the foreground or background color as such -- you're changing the way black (Color_0) and white (Color_15) are displayed. Therefore, if your application has a white background and you want to change it to a black background, you would change the value of Color_15 to 0 0 0 (the RGB value of black).

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