Rated 4 out of 5 stars

Works nice, thanks!
Though I'd like to see the option "Show Today and Selection on Day View (Day View)" split into separate options. I have enabled "Use New Today..." but disabled "Use New Selection...". This way when I enable "Show Today and Selection..." all days always turn yellow in the day view, I cannot distinguish today from other days, but I'd like the pink header with white background just like in the day view.
Furthermore, it took a while until I found out what each option does, having to restart TB lots of times, is it possible to not require a restart?

This review is for a previous version of the add-on (2.1).  This user has a previous review of this add-on.

Version 5.0 allows customization of colors and provides menu access to options

Calendar Tweaks 5.0 allows user customization of 'Today' and 'Selected Day' colors (header background color, day box background color, and border color).

Calendar Tweaks 5.0 also provides menu access to the 'Calendar Tweaks Options' dialog and an 'Apply' button.