How do autumn, bronze or gold coloured contacts appear on blue eyes?

Thinking of buying a gold-ish coloured contact (and I'll just make this clear that it's NOT for Twilight costume, haha) however my natural eye colour is a medium to dark blue colour, identical to this:
http://img441.imageshack.us/i/ourblueeyes.jpg/

Was about to purchase Freshlook Radiance contact lenses in 'Autumn':
http://www.us.cibavision.com/about/media_room/images/img/lenses_on_eye/flr_autumn.jpg
(over brown eyes as a base)

But then I read this (scroll down a little to the example photos):
http://iosph.com/radiance.html

Do these Radiance lenses only add bronze/gold colour to your eyes if you are naturally brown colour? I figured that over blue eyes they wouldn't make much of an effect?
What contact lenses are best to achieve a perfect gold colour over blue eyes like mine?

Thanks in advance =)
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>>> How do autumn, bronze or gold coloured contacts appear on blue eyes?