Colors play a central role in data visualization. But what if your readers are color blind?

According to Color Blind Awareness, color blindness affects 1 in 12 men (8%) and 1 in 200 women (0.5%). There are an estimated 300 million color blind people worldwide, including Mark Zuckerberg, Bill Clinton and Prince William!

Thanks for putting this out.I haven't even thought about this problem till I read this today.

yEd Graph Editor from yWorks (http://www.yworks.com/en/products_yed_about.html)