Just like the colors of items in Actions match the color of the list they are on, it would be great if the color of events matched the color of the calendar they are in. The background on my timeline is blue, so whenever I click on an event from a yellow or red calendar and it pops into full screen with a blue background it makes me think I put it in the wrong calendar.

It would be great if this was at least an option I could turn on in preferences. The color coding of things (especially in Actions) has helped me tremendously with productivity recently.