Yes we actually did have a couple questions on how to change the background color, and realized that using a container is "doable" but "not intuitive", so definitely something we should improve on!

And yes the context menu is covered when it's near the top , a bug we need to fix.

About the color, I am not sure whether you want the ugly color or you don't lol, but you seem to have figured it out :D

Thanks for the feedback!