How do I hide any selectable item?

For example, I want to hide bar numbers wherever I put a rehearsal mark. Sometimes I want to hide other things too, just for the heck of it. Is there a way to hide any selectable item?

Bar numbers can be made invisible when you change their color in properties panel into white.
Not elegant but it works with some items.

Good thinking

Actually, there’s an option to hide the bar number in the bar number properties. New features popping up everywhere.

Yes you’re right. Thanks.
Strange thing that I can whiten note heads but no stems or beams. Unfortunately it’s still not possible the color lyrics.