Next time you are playing a video game online and a member of your own team shoots you - spare a thought: they could be colour blind.
The inability to easily distinguish between certain colours is a problem that affects about one in 20 men, and one in 200 women.
For video gamers, it can mean some parts of games become vastly more difficult - such as when opposing teams are distinguished by the colours red and green, or if other crucial on-screen indicators feature similar shades.
a very interesting point. also has a few screenshots edited to show the affects of colourblindness