I removed the line below from your script:
GM_addStyle('*{font-family:"Helvetica Neue" !important;}');

Then it works exactly as I want it. Thanks.

p/s: You should probably mentioned somewhere on the ABOUT page that 'u' will toggle the views.

I like the new look of the calendar, but I hate the font. Can you change the font back to the normal gcal font?

Marvelous & beautiful !!!

THANK YOU VERY MUCH !

Gcal never looked so good.

Don't overlook the 'u' hotkey to toggle between mini view and normal Helvetical view.