As I wrote, this is meant for web display only, no matter what operating system.
Regarding the application’s interface, here‘s a link to a thread about theming it, but I never dug into that enough to know if what you‘re looking for is doable - although I doubt it by skimming across the screenshots.
That said, I‘m sorry to have neither time nor patience to take you by the hand - you‘ll have to figure it out yourself.
Remember also, that with installing any new Roon version, you‘ll have to copy over your modded files to show again.
Good luck!