Windows 7 Problem with new theme

Ok, I've created a new theme for my Windows 7 desktop.

I made everything green and black, like the old Unix systems, just for the fun of it.

Well, it affected my internet browsers.

That is, Firefox and Google Chrome.

The background to every page in FF is black with green text. I want the pages to show normally.

Chrome's pages are fine, all except the buttons - every button on a site in chrome is black background and black text.
Kind of a problem.

How can I get my theme to leave my browsers alone?

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