Believe it or not, I deem my skin medium and those are the only colors i wear reliably (which an exception to the apricot, which I can't seem to find a satisfying shade of). --My mother has more olive to her skin, so I assume I'm medium, with less green, but not so far as my cousin who burns like crazy.
looks intimidating but trust this.think of your face as a plain. highlights are bright and are the hills whereas countours are dark and are the valleys. use bronzer or darker eyeshadows (in the crease) to create depth or contour, and use illuminators, highlighting pencils, etc. to brighten up the face for the highlight areas. it will make a huge difference. :D