Toolbar color personalization allows you to add a primary color that will provide alignment to your organisation brand.
See these examples below of different Toolbar Colors:
Navigate to Tools > Account
Select Branding in the red box below and then the Branding tab in the orange box:
To pick a Theme Color use the Theme Color drop-down picker.
You can adjust the Theme Color by adjusting the Color Scroll, moving the Color Position, or entering your own HEX (RGB) Code. Select Choose and then select Save.