## In Widget
sub make_color_widget {
  my $class = shift;
  my $new_color = shift;

  my( @widget_args ) = @_;


  { no strict refs;
    @{ qq{Widget::${new_color}::ISA } = (qw( Widget ) );
  } 

  my $self = {@widget_args};

  return bless $self, qq{Widget::$new_color};
}

sub my_color {
  my $self = shift;
  return ( (ref $self) =~ m{^Widget::(.*)} )[0];
}