^^You're right, nude lips are a trend, popularized by Jennifer Lopez. Not everyone looks like her, and not everyone has her skintone. As a result, some people look awful in it, yet adore wearing colors such as Myth l/s. It is really sad, because you hand them M.A.C Red, and they look absolutely amazing in it, but as soon as they put it on, it's "OH NO"S!!!! My husband thinks I look like a prostitute!" And then, back they go to the No Lips Nation.
I think red lipstick is amazing. It exudes such confidence, such sexiness, such glamour (Gwen Stefani anyone?). Pale skin or tan skin, there is a red for everyone. Plus, in my opinion, it POPS against anyone who wears it (it's also the reason why people shy away from it). One has to have the confidence to go with red lips, otherwise they're wearing it all wrong.