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As described in another issue, upgrading from 12.04 to 12.10 may break the Ambiance theme, causing many of the menus and controls to display in a strange grey-on-grey state.

I have checked another user account and the theme appears fine there, so it seems to be a user-specific issue.

What can I do to reset my theme settings to the standard for 12.10? I assume there is some set of config files in my home directory somewhere that are customizing it incorrectly.

(As the linked issue was closed for being "too localized", I'm hoping a general fix can be provided for many similar theme issues.)

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sudo apt-get install --reinstall light-themes

Should do the trick.

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Didn't work for me. – Serrano Pereira Mar 1 '13 at 13:53
Didn't work for me either (though I thought it should) – Mina Michael Jun 24 '14 at 16:59

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