Interesting, in Derived.pm and Widget.pm you see a similar constructs only opposite

$specs->{'-foreground'} = \@fg,'foreground','Foreground',BLACK];
[download]

Widget.pm

 $cw->ConfigSpecs('-scrollbars' => ['METHOD','scrollbars','Scrollbars'
+,'se'],
                  '-background' => [$w,'background','Background'],
                  '-foreground' => [$w,'foreground','Foreground'],
[download]

I think it would be interesting to know what this is doing...