About the only thing folks should take away from this is to pick their ballot colors wisely. I have seen some pretty crazy ballots out there in the field, and have never understood why people won’t just stick with black text on white background, the default. Mauve on teal is not attractive, folks.
As to Tari’s request, color cues are not for colorblind people. Them are the breaks. What we need to do however is implement Greg’s longstanding request to put the number voted and number to vote for on each race on the summary screen.
I'm going to be pedantic here. What Greg refers to as colour blindness is exceedingly rare, and is (logically) referred to as total colour blindness.
Colour blind people do in fact see colours. The condition refers to an inability to distinguish between two colours. Most commonly, the two colours are red and green, and the condition occurs in varying degrees. A rarer condition is the inability to distinguish blue and purple, or yellow.
That's why the tests for colour blindness usually consist of looking at a field of red spots and seeing if you can see the number (composed of green spots) within the field. or blue/purple/yellow.
As far as I know, there's no condition where people are unable to distinguish between pink/black. or pink/white for that matter.