[chrishajer]

This fix is not applied, and when I apply it to your CSS, the background is white as expected. If you cannot wait for the new theme, I think I would just make this minor change.

I think you might have some things cached in your browser that is preventing you from seeing changes. Can you use a different browser, or a different computer, or clear your cache? I think once that’s done, you will see some problems fixed. Both this one and the JavaScript error appear fixed to me.