[rubergly]

As I was ranting a bit about Fog Creek's choice of label colors in Trello (http://news.ycombinator.com/item?id=4330851), I started to wonder: do development shops of 30+ people typically not include anyone who is red-green colorblind? Typically all that's required is to show someone a screenshot and say "does this work?". In the case of Trello labels, I have to assume that no one on the team at Fog Creek was colorblind, and that (i) the palette choice was done lazily, (ii) there was no one with red-green colorblindness at Fog Creek to do a quick "do these work?" check, or (iii) there were very strict design restrictions on what colors could be chosen to fit in with the rest of the site's aesthetic (personally, I think this is a bit silly, because the wacky patterns of colorblind-friendly mode clash a lot with the rest of the site's design, but 92% of users seeing a non-clashing experience may have taken priority). (ii) seems the most likely option. As a left-handed colorblind redhead, sometimes I take my 'deficiencies' for granted, but that just seems odd.

The biggest irony? Assuming statistical independence and that 8% of the population is colorblind, there's an 8% chance that a group of 30 people would not include anyone with colorblindness.