I saw Larrys Custom Widget, but I am looking for something different.
When a user first opens the Layer List or Legend Windows, they are both semi-transparent. Larry's Widget has the transparency manually set by the user.
More specifically, I am trying to find the correct section of the CSS Style file to do this in. So far, I have tried background: rgba(76, 175, 80, 0.3) in many locations, and still do not get the default white background of the Layer List Window to be transparent (or even green). I have managed to make a lot of other things green and transparent.