[ Thanks to Jane Walker for this link.
“Microsoft Office has the ‘more colors’ option. How can
I add more colors to the OpenOffice palette?
“Solveig Haugland: You can create any color you
want, in OpenOffice.org. Choose Tools > Options >
OpenOffice.org > Colors. Then click ‘Edit’ and in the window
that appears. Double-click in the left hand square of colors, then
refine it in the right side. You can also just type in the RGB or
CMYK values you want. Click OK, then click Add and name the color
what you want. The color will show up in all color selection lists