I am putting several meetings on my calendar. They all have beginning times (of course!) but who knows when they will end? I'd like to leave off the ending times altogether, but that doesn't seem to be an option. Is there any way around this?

Also, how can I change the background color of the pop-up box which appears when I click on calendar items to see the details? It's coming up a yellowish-gold, which I did not select. I can't see where the option is to change this. (In the calendar software the background is white, so that's what I thought I was getting.)