vim has both "light background" and "dark background" settings. Looks like aquarium was using the dark background setting when he shouldn't have. On a standard black terminal, those colors are just fine. He should have modified his vim settings before converting the file to HTML.

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I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

Note: All code is untested, unless otherwise stated