Color Ignorant

Here a pretty good example of how colorblind I actually am; Color Blindness Check I can see a "25" in the upper-left figure, and absolutely nothing else in the remaining figures. Apparently 12-20 percent of white males, and virtually no females, have the same problem. Actually its not a terrible problem, except at work when I have to determine which router is not working by comparing the red and green lights. They all just look kinda yellow to me. So I have to ask for help.