return true;
}
-//////////
-// virtual functions which can be overridden by derived classes
-//////////
-
-// none
-
-//////////
-// non-virtual functions in this class
-//////////
-
-//////////
-// static member variables
-//////////
-
-// none
-
-//////////
-// global constants
-//////////
-
-const color some_color;
-const std::type_info & typeid_color = typeid(some_color);
-
//////////
// friend functions
//////////