Change Page Color for Workflow PDF Attachment?

Per the title, I’m trying to change the page color of the PDF attachment for my workflow. The AppSheet documentation doesn’t specifically talk about this and I can’t find anything about it on the forum. If I change the page color in Word or Docs, it doesn’t work. If i change the background cell color, that works but everything outside of the table reverts to white. Does anyone have any ideas on this one? Thanks in advance!

Maybe set margins to 0, fill the entire page with a one cell table with your color, then put everything else inside of that?