You can feature different background images, colors, etc. for specific page templates by customizing the template with a Custom HTML section.
Access or Create a Specific Template
Use the page selector to open a specific template. Each template is listed with the number of products, pages, etc. assigned to it.
Create a new template by selecting [+] Create template.
Add a Custom HTML Section
In the left sidebar, select (+) Add section, then Custom HTML.
Use the Custom HTML section to add special CSS to style the page.
For example, to change the background color of the page to Bisque:
<style>
body{
background-color: bisque;
}
</style>
Add an Image Section
In the left sidebar, select (+) Add section, then an image section (e.g. Gallery).