Rated 5 out of 5 stars

Bug report:
With ToggleDocumentColors, I switch to user-specified colors.
In Firefox options, I choose system colors (meaning colors from the current Windows 7 theme).
Firefox correctly displays system colors.
With ToggleDocumentColors, I switch to page-specified colors.
Firefox correctly displays page-specified colors.
With ToggleDocumentColors, I switch to user-specified colors.
Firefox incorrectly displays the Firefox-configured colors rather than system colors. In Firefox options, the system colors checkbox is incorrectly not selected.

ToggleDocumentColors 1.3.20111008, Firefox 8, Windows 7.

I don't see any better place to submit a bug report.

This review is for a previous version of the add-on (1.3.20111008.1-signed.1-signed). 

Thank you for reporting this bug. I have applied a fix; the new version will be available once it has been reviewed.