Circle Color Contact Lens Review-Buy or Bye?

I'm thinking about getting BIG circle color contact lens.  A popular trend in Asia, girls are wearing contact lens that not only change their eye color, but also enlarges their eyes.  These color contact lens are bigger in diameter than regular lens, giving the illusion of a bigger iris and hence bigger eyes.  Although the lens come in a rainbow array of colors including pink, I would definitely get the more subtle colors such as grey or light brown so I won't look too freakish (hopefully).

Here are some pictures for reference.  What do you think?  Buy or bye?