When you hover over a date with your pointer (aka mouseover) the background of that date will change color. Here is how to set that color.

You have two (2) options. Let's walk through each of them.

Step 1: After you log in, click on Calendars (brown box below).

The Your Calendars page will open.

Step 2: Choose the calendar you wish to modify (brown box below).

Step 3: Click on Design (brown box below).

Step 4: Scroll down and click on Days and Dates (brown box below).

Step 5: Scroll down until you find the header Date background hover color.

We will use this calendar and look at September 5.

The default is always a medium grey.

Click on Custom and then click on the circle to choose your color. Note that now the mouseover color of September 5 is yellow.

Here is a walkthrough of this option.

Click Save at the bottom of the column to save your changes.