This is on the Orienteering Australia
Website
Change the CMYK values around as you like, I have made up colour charts for Green, Blue and Yellow in OCAD, similar to the Purple one that is avalable
here
If you would like them, drop me a email
For example, when printing the Maps for the Oz Champs 2009, we were using PRETEX through a Konica Minolta 6501, we changed the values of Brown from 56/100/18 to 56/100/27 as we wanted it darker, for the Green we changed from 76/91 to 66/100 as we wanted the Brown to be seen through it, so made it a little lighter.
I have kept those setting as standard, and now use them as default on my XEROX 7750/7760