I agree with Kasmira *and* with Angie!
I am very short with short legs, and I do find that nude heels elongate my appearance, whether worn with skirts and dresses and bare legs, OR with full-length khakis or camel dress slacks.
I also recently purchased a pair of Theory nude patent flat sandals, which I think will be quite versatile for a trip we're planning this summer because they'll go with everything so I don't have to pack a zillion shoes.
Popping is good ... but if you're already wearing bright clothing, nude shoes tone things down and balance things out.
In Kasmira's outfit today, I think adding bright pumps would have been too much with that dress. I think she does it right, keeping the pop of color to the purse only. The nude pumps coordinate nicely with the khaki blazer, adding balance.
However if your closet is full of understated neutrals, then yes, absolutely, shoes are the place to add interest and play with this season's brights!