A silver-colored snake?

I found a silver, or dark-grey colored snake in my yard. It was beneath trash. South Florida. About 8 inches long, very thin body, round. Shinny. narrow come first. Never heard or seen such a snake. Any ideas?
Leopard Gecko Housing Question?
Answers:    Could enjoy been a Rat Snake or even a Racer. Here is a website with pictures of different kinds of snakes contained by FL. :)
http://www.floridaconservation.org/viewi...
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