Carry same bakground in Joomla Template into Store

Site is www.fritayrestaurant.com , using a template from Shape 5 called 'Restaurante'.

The background on the regular site is at images/greenback-1.jpg but it doesn't appear in the Category and Product pages.

fritayrestaurant.com/store/category/12-fritay-pikliz

Was able to fix it by editing how the background img is called.