Not to worry though, you're in good company. Almost 1 in 12 men have some form of color blindness. Color blindness is much more prevalent in men, with only 1 in 200 women living with some form of color blindness. The company I work for has a color blindness test (pretty much just like the one you posted) that all prospective employees, who will work with our end-customers in our retail locations, must pass. A few prospects who weren't hired due to their color blindness tried to sue us a while back and lost, as color matching is a "bonafide job qualification" in the architectural paint industry.
I got checked 15 or 20 times in my life...always good.
It was funny when my wife (of 15 years) asked me if I had ever been tested after she took a quick FB test 5 years ago. She thought I was color blind (in addition to being deaf).
I just looked at her like...
I know I have always been a bit color blind and I only see the #12 in the third to last panel. Makes me wonder what a set of those gasses will allow me to see. Then again been this way all my life so why bother. Sort of use to it by now.