Project Properties – Display
The Display section of the Project Properties allows you to adjust and override various highlighting and formatting options throughout the application that will be applied at a project level. This works to ensure a consistent visual presentation for all users accessing the project.
To change the information in this section, click the Edit button 
in the ribbon menu.
Project Properties window – Display
COLOURS
The colours section of this window allows you to specify an Override colour setting for any of the display elements set in the Options – Display window on a per-project basis.
Once an element has the Override option checked the colour can be modified.