I cannot see certain shades of the color green. Help!?

I know that color blindness is usually with paired colors, for example red-green color blindness. However, I can see red just fine, but I have major difficulties with the color green. I can see that trees are green and all of the rich shades like that of green, but when they stop being so vibrant I always see green as gray or brownish. Money is gray, I mistakenly buy green-tinted clothes thinking they're gray or a dark khaki. I'm a male, young... Any thoughts?