Very Cool and a Bit of a Relief

I'd known for quite a while that there was a problem with the way I see color, but I pass all colorblindness tests. I show up as having normal color vision. But then there is the reverse colorblindess test, where you should only see the patterns if you ARE colorblind. I pass that too. So, somehow I'm both colorblind and not colorblind. I e-mailed the designer of the test and discovered that, while there is no known explanation for how this occurs, I'm not the only one it affects. Apparently, there may be something a bit different about either my eyes or my visual cortex. No one knows for sure. It's a bit of relief to know I'm not nuts.