Is there a way to select your own category colours on Outlook for Mac ver 15.10.0, I was able to do this on Outlook 2011 ver 14.5.1 the limited amount of colours does not satisfy my needs

Hi,

Based on my research, the custom categories are displayed in the navigation pane (The left pane of the Document Connection for Mac window that displays saved locations and files) by default. Please go to Outlook menu > Preferences > Categories, and then check if the check box before "Show new categories in navigation pane" is disabled.

Since this forum is for general questions and feedback related to Outlook for Windows, and we don't have an Outlook for Mac environment, I'd recommend you post a new question in the following forum to get further assistance:

https://community.office365.com/en-us/f/153

The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.

Steve Fan
TechNet Community Support