menuhover.jpg file not found

I am seeing many errors such as this one:

Details
Type page not found
Date Friday, June 15, 2007 - 00:34
User drupal_admin
Location http://s157794238.onlinehome.us/themes/andreas09/img/menuhover.jpg
Referrer http://s157794238.onlinehome.us/themes/andreas09/style.css
Message themes/andreas09/img/menuhover.jpg
Severity warning

I see menuhover.jpg in the CSS file, however in the CSS unlike the PHP files there is no magic:
$color = 'blue'; //set to blue, black, green, orange, purple, or red

If I simply copy the -blue file to the filename getting the error, then it appears the menu item(s) are constantly mouseovered.