(Suggestion) Open Folder Background Colour (128.11 Beta Update for Android)

One of the things that I don't like about the recent update is the addition of having the background of folders, when they're open, match the app theme. It's a bit disorienting and adds confusion on if a server is really in a folder or not.

A suggestion for this is to have the initial folder colour to still be in place in the background when the folder is open, maybe as a darker/transparent version?