Make past meetings paler to ease calendar usage

[oglekler]

​https://make.wordpress.org/meetings/

If a contributor is looking on the meeting schedule most likely he/she is interested in upcoming events and less often to see when something had happened, so, it will be nice to understand from the first glance when is the next meeting you can attend and didn't refer to the calendar on your computer what day it is. Sometimes you cannot recall what is the day number right now, possible because they are moving too fast.

[tellyworth]

This seems like a good first bug. The code is at ​https://github.com/WordPress/meeting-calendar

[matteoenna]

I read that it's a "good first bug", can I try to fix it?

I thought I would solve it this way, also following the style of Google Calendar:

• add a class to the past events, I will need this to add an opacity
• add a style to the current day, perhaps a background

An example of my idea. Could it go?