The background images of all areas are really nice to see. Unfortunately most of it is hidden by default (all of it on a mobile device). It would be nice to be able to see it.
For instance with a transparent background. The default background (background.jpg), could be replaced by a CSS attribute like rgba(20, 24, 27, 0.7). Of course inner containers would have to be replaced by something similar as well.
I tried it and it's still fairly easy to read text and we can admire the artwork.
If it ever gets implemented, maybe not make it the new default, as it changes the user experience, but it could be an option a user can select in "preferences"?