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Yes, you can use the page class suffix feature in template.
For example, the 'Meet Dee' menu item on your site has id: 110
![](https://www.joomlart.com/forums/assets/files/2020-04-27/1587981920-26929-screenshot-at-apr-27-17-04-10.png)
You go to Templates > GK Folio > Features tab > Suffixes for pages and add a new class newbg to this menu item id: 110:
![](https://www.joomlart.com/forums/assets/files/2020-04-27/1587981981-695186-screenshot-at-apr-27-17-02-40.png)
Now, add custom css rule for above new class:
.newbg #gkBg {
background: #a653f3;
}
change to your desired background color.