Delicacy Theme – old version – background images disappeared

Can you just help me with the code in the theme to get my background to show back up on all of my inside pages? I created a custom template with a static header for the inside pages (because there is flash on the home page) and posts of this site for a client and then she upgraded.. now after changing code in many places I can’t get the background image (https://emagineweddingsandevents.com/wp-content/themes/delicacy/images/bg/EmagineThis_background.jpg) to show back up on all the other pages.. I do not want to upgrade the theme.. thanks!