You can do this quickly without sorting through the color palette ... Outlook provides plenty of flexibility when it comes to using calendar and category colors. You could use different calendars ...

Tiles for Outlook is a Windows 10 app that allows for the creation of Live Tiles for your Outlook calendar. When you purchase through links on our site, we may earn an affiliate commission.

After setting up your accounts for Outlook Calendar in Windows 10 Mobile, you can change which calendars are visible ... the look of the app by changing colors, select between light or dark ...