Colourful Chemistry Or Not

I have been reading about how colour vision deficiency (colour blindness) can cause issues for people. I was very interested in this article (http://colororacle.org/resources/2007_JennyKelso_ColorDesign_lores.pdf) and several others about the difficulties in reading certain graphics and maps when red-blue colour scales are used. For example, temperature anomaly charts are often red-white-blue with red being hotter than average and blue being colder...