Download the Microsoft Office ADMX templates and disable any command from any group using their IDs.
The detailed spreadsheet of the commands and corresponding IDs are listed in the excel spreadsheet by Microsoft at this link:: http://www.microsoft.com/download/en/details.aspx?id=6627
In this KB we are disabling the Page Color command of the Themes group from Options tab. So, we’ll be showing only those steps.
The Policy ID for the Page Color command is highlighted in the below screenshot.
Name of the Excel spreadsheet: OutlookMailComposeItemControls.xlsx
PageColor command: PageColorPicker
PageColor Policy ID: 13927
Use PolicyPak Administrative Templates Manager to deliver this ADMX settings to a targeted audience using Item-level Targeting filters.
Location: User Configuration --> Policies --> Administrative Templates --> Microsoft Outlook 2016 --> Disable Items in User Interface --> Custom
Setting: Disable command bar buttons and menu items
TIP: Use Item Level Targeting filter to control the scope of this setting.