[Feature Request] Transparency behind Application Launcher

Is your feature request related to a problem? Please describe.

The problem is that the user is not able to see their wallpaper with this extension.

The developers are reluctant to put a fix in this. Not all people have the same ideas of "minimalism" stored in their minds.

Describe the solution you'd like Giving the user the option to either make the Application Launcher completely transparent or opaque, or the option to change the background opacity of it would make a lot of people happy.

Describe alternatives you've considered CONTRIBUTING.md told me to edit a .scss file but none was found.