I'd like to have the option to pick a color to identify the folder I'm working with in the navigation pane (the window on the far left). On my PC it shows up as a very light gray and I find it super difficult to easily see which folder is selected.
Yeah, that grey on light blue is hard for me to see, too. I wish it were back to Blue on White, like it used to be. But allowing customization for each person would be the nicest option.