Colour blind cartography
I am slightly red-green colourblind (in that I can still see red and green fine, but have difficulty with say a red and green line next to each other). Does make it a bit easier for me to make maps for people that are red-green colourblind.
In addition to color brewer and vischeck mentioned above, the GIMP has colourblind filters built in so you can adjust images as part of post processing. Photoshop has the same kinds of filters if you have access.
Lastly the ESRI Mapping centre has a set of styles for download that include a colour set suitable for colour deficiency.
Hope that helps!
