Probably not - I've never heard of any dog's coat changing so drastically. The colour may change slightly, particularly with age.
My cocker's coat seems to change colour with the seasons. He seems much darker in the winter and lighter in the summer. He's a solid golden cocker spaniel but in the winter he looks almost red.
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No More Spots by: Anonymous
It's highly unlikely that your dog will develop any more markings or spots. Your dog's coat will probably stay this way.
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More Spots? by: Jenny
I don't think she will. Cocker coat colours sometimes change from time to time, however, I don't think the actual markings will change.