Can you recommend an Excel addon/color chooser or website so that persons with normal vision can test their charts and color choices for the four known kinds of color deficients?
It would of cource help you, if the chart lines have different line patterns (dottet lines).
http://colorbrewer2.org has some good palettes for data presentation which they describe as "colorblind safe". I assume this means for all kinds of deficiency.
It would of cource help you, if the chart lines have different line patterns (dottet lines).