using enum

[Oliver M.]

Consider the following:

struct SColors
{
enum enColors { red, green,blue };
};

void Foo(SColors::enColor Color)
{
  switch(Color)
  {
    case SColors::red: /*...*/ break;
    case SColors::green: /*...*/ break;
    case SColors::blue: /*...*/ break;
    default: assert(false); break;
  }
}

I would like to write something like this in the Foo function:

void Foo(SColors::enColor Color)
{
  using SColors::enColors; // Want to "use" all color enumeration values!

  switch(Color)
  {
    case red: /*...*/ break;
    case green: /*...*/ break;
    case blue: /*...*/ break;
    default: assert(false); break;
  }
}

I know that I can apply "using" to each distinct enumeration value, but I'm too lazy to do that. So is there a way to apply "using" to all enumeration values with a single statement (although it may not be good practice)?