Emacs cc-mode indentation problem with C++0x enum class

Emacs cc-mode does not appear to yet recognize the type-safe enum class introduced in C++0x. The result I get is a double indentation for second, third, etc enums:

enum class Color {
    Blue,
        Red,
        Orange,
        Green
        };

What I would like is:

enum class Color {
    Blue,
    Red,
    Orange,
    Green
};

Can you recommend a good command to add to .emacs which will make cc-mode treat enum class the same way it treats the plain old enum?