http://www.macupdate.com/download/19314/sim-daltonism-1.2.zip
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Sim Daltonism is a color-blindness simulator for OS X. It filters in real-time the area around the mouse pointer and displays the result - as seen by a color blind person - in a floating palette.
What's New
Version 1.2:
- Protanopia (most common color blindness) is now selected by default
Requirements
- OS X 10.6 or later
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