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change thanksgiving top border

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Before Thanksgiving, I had popups to change my Firefox top border, I selected the "Charlie Brown Thanksgiving" one, and now I can't change it to something generic. Where can I find a list of selections?

Before Thanksgiving, I had popups to change my Firefox top border, I selected the "Charlie Brown Thanksgiving" one, and now I can't change it to something generic. Where can I find a list of selections?

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You can revert to the Default theme (Tools > Add-ons > Themes).

See Use themes to change the look of Firefox and http://kb.mozillazine.org/Themes (Lightweight theme)