This one is a copy of the Original tcl/tk version of
color-selection based on the unix rgb.txt. If youre
used to this file then this tool is perhpas handy..
(load "//http://www.nodep.nl/downloads/newlisp/xrgb.lsp")
PS: for those not having a rgb.txt ->
(write-file "./rgb.txt" (load-file "//http://www.nodep.nl/downloads/newlisp/rgb.txt"))