Yes, you can do that. But if google has that same behavior then shame on them when there are more calendars than just the one owner of the account. When you have 25 people setting meeting events and the calendar is filled with color, who in their right mind wants to click on every item in a months calendar to see who owns or even attends any given event? Especially, when its a meeting that 15 people are to attend? I'm gonna click 15 times to see who's in the list of colors to see who is attending this meeting ... NOT me! Even if the hover of the event would show the owner/attendees name would be better than it is now. Clearly others must not be using the SmarterMail calendar the way we are or someone else would see all this clicking as a nuisance. As for a legend well that's fine as long as you don't have the issue as described above where some users can't tell one color from another when they are close in color(just a shade or so off). Its clear that all the info needed here is present when the calendar displays (just look at the inspect of the page). Seems ridiculous to not show owner/attendees names. Such a simple thing to do.