Why are the backgrounds yellow?

If you are browsing around your site and you find that, on certain pages where users have the option of filling in fields (e.g. the member sign up page or the contact form), those yellow backgrounds are not being generated by your site.  Those yellow backgrounds are being generated by the Google Toolbar.

Here is an example of a page where some of the inputs have a yellow background.

These fields are highlighted yellow because the Google Toolbar "Autofill" button can be used to autofill in these fields.

If you'd prefer not to have any of your fields appear as yellow, adjust your Google toolbar settings.