Homebrew PCBs

> If color management is disabled in Windows and the printer driver, how can
I
> find an RGB value for each of the CMY colors?

Here's a calculator:
http://www.usq.edu.au/users/grantd/WORK/216color/ConvertRGB-CMYK-Grey.htm

There's no guarantee that using solid colours in RGB (eg Cyan is Red=0,
Green=255 & Blue=255)  will give you pure CMYK colours when printed though.

Easy enough to find out I suppose.

Tony