xterm -fg white: Warning: Color name “white” is not defined

I’ve had problem with color names ever since around the time I’ve upgraded to Xorg 7.0 This problem as been annoying, but it was acceptable, just until lately. I’ve discovered that a required file /etc/X11/rgb.txt was involved, and was required for X to understand color mappings. For some reason, although x11-common 7.0.20 was supposed to…