Add on top of what b10m have already said, CGI.pm actually allows you to define style for a component on fly. This is one line I cut from one of my scripts:

    $msg .= $cgi->table({-border => 1, bgcolor => $c1, style => "Color
+: $c2;"}, $cgi->Tr($table_data));
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Pay attention to that style => "Color: $c2;", is it not very handy?.