I don't know if this is "general" or "off-topic", so feel free to move this post if needed, or let me know and I'll repost in a different area.

A discussion about color in another thread reminded me of this online test I took a few months ago. You are supposed to rearrange the color tiles in each row until you put them in order. I found it fun, but as always, YMMV.

http://www.xrite.com/custom_page.aspx?PageID=77

If I remember correctly, the lower your score, the more accurate your color vision is. If you have trouble with the test, it may or may not be due to your vision. It may be that your monitor isn't calibrated for color correctly.