I like to work in dark theme to save my eyes because light mode is so bright, but most of the time I need to resize my video to fit properly in the canvas screen so there aren't any black bars around the video. But it's hard to see exactly where the edges are in dark mode because the background is nearly the same black as the black around the video. So it would be nice to be able to switch the background of the canvas to White or make it another color so that it's easier to see the video edges. Right now you have to exit the video editor and go to the projects screen in order to change the theme. It would be nice to be able to do it in the editor.