1) The ability to change the background color of the dialog box.
2) The ability to move the button.
Both would involve letting us change the style: background-color for (1) and the left and bottom coordinates for (2).
It also would be nice to be able to hide the button entirely. If you add the Options to GM.registerMenuCommand, then you'd still have a way to pull up the options, even if the button isn't visible.
Edit: setting the button opacity would also be nice.
1) The ability to change the background color of the dialog box. 2) The ability to move the button.
Both would involve letting us change the style: background-color for (1) and the left and bottom coordinates for (2).
It also would be nice to be able to hide the button entirely. If you add the Options to GM.registerMenuCommand, then you'd still have a way to pull up the options, even if the button isn't visible.
Edit: setting the button opacity would also be nice.
Sample code for GM.registerMenuCommand :: https://stackoverflow.com/questions/56024629/what-is-the-accesskey-parameter-of-gm-registermenucommand-and-how-to-use-it
nb: Requested via Reddit.