@kvalentk since you have the page ID # you should be able to just use some custom css to change the background. Try this link You’ll have to work your way through the post and notice the very subtle differences as to why it doesn’t work until the very end. But, it’s worth the read.
Hi @xcarnage. I use a plugin named “Super Simple Custom CSS”. You could also use the Custom CSS area of Mantra. That’s found in Dashboard > Appearance > Mantra Settings > Misceallaneous Settings > Custom CSS. Just copy/paste the CSS Zed gave you into that box. Make sure you save your changes.