I thought about this too, but then realized it's a completely moot point unless you are black/white color blind (which virtually nobody is).
Differing colors are NOT being used to indicate differing actions. They're just being used to indicate interactivity in general, and it doesn't matter if you see that indicator as red or green (the most common form of colorblindness).
You hint at it, but there are more flavors of color blindness than red/green. When I learned that my (former) boss was color-blind, I spend an hour on wikipedia and learned way more about color blindness than I had realized there was to know.
Differing colors are NOT being used to indicate differing actions. They're just being used to indicate interactivity in general, and it doesn't matter if you see that indicator as red or green (the most common form of colorblindness).