Colour contact lenses like Cheryl Cole's eyes?

I love the dark 'doe eyed' look that Cheryl Cole has. Her eyes always look fantastic with lots of black eye makeup and I think it's because her eyes are so dark. I've never felt able to pull off that look with my lighter eyes, I just don't think it looks as good for some reason … are there any good dark brown contact lenses out there that will imitate the dark, almost black appearance of her eyes? Preferably they need to be as natural looking as possible.My eyes are greenish by the way.

Cheryl's eyes:

My eyes:

Thanks in advance :)
>>> Colour contact lenses like Cheryl Cole's eyes?