It shows properly on the screen but not in Print Preview? First thing to check would be Page Setup. While in Print Preview, click the Page Setup button on the toolbar and make sure you've enabled "Print Background (colors & images)". If that is already turned on, my next suspicion would be that Firefox thinks your printer cannot handle color. I'm not sure of the best fix for that, but you can clear the information Firefox has gathered about your printer using the methods in this article: [[Fix printing problems in Firefox]]. Any improvement?

That was it! Thanks, jscher