On necklaces and "wacky-lady" style

I go through periods where I become a fashion rebel, but not in any cool way you'd imagine. It's more that I want to see how far I can push the limits of my clothes and accessories combinations without looking like I'm homeless or should be locked up likeGirl, Interrupted (though at this point, I'm sad to say, I'd probably be Lady, Interrupted or Mid-thirties Woman-child, Interrupted. Sigh.) ANYWAY. This rebellion is currently translating to wacky necklaces. I've been wearing the painted shell necklace I bought for basically 75 cents in Buenos Aires, but I'd like to expand to some fun enamel styles, like this white beauty,or maybe a faceted '50s-dinner-party look like this red multi-strand choker, or explore even scarier territory with this coral and a lot-going-on piece from J.Crew. All of them would be perfect right now with a simple sundress and sandals, though to keep from being too Kathy Geiss from 30 Rock (remember her? Daughter of Jack's boss, married to Will Arnett, loves unicorns), I'd stay away from a loud print or orthopedic shoes.