ColorScheme resource

The colorScheme resource specifies the 3279 color scheme to use at start-up. It applies only in 3279 mode. (To define the colors used in 3278 mode, use the normalColor, boldColor, inputColor and colorBackground resources.)

x3270 uses the value of x3270.colorScheme as a color scheme name and uses it to look up the value of the resource x3270.colorScheme.name, which contains the definitions for the color scheme. So for example, if the value of x3270.colorScheme is foo, the color scheme is defined by the resource x3270.colorScheme.foo.

Resource value
The value of a colorScheme.xxx resource consists of 23 whitespace-separated values. The values are (starting from 0):

Example
x3270.colorScheme.default: \ black royalblue3 red magenta \ green4 cyan yellow white \ darkSlateGrey blue3 orange purple \ paleGreen2 paleTurquoise3 lightSlateGrey whiteSmoke \ white black dimGrey \ 4 2 1 15