Yes, you can always change the color of the icon bar according to your preference, @Toni8935.
To achieve this, please follow the outlined steps below:
Also, if in case you want to add a new icon bar item, refer to these steps:
That's it! You'll now be able to change the color of your icon bar. Feel free to come back here again if you have other QuickBooks concerns. I'm here if you need further assistance. Have a good one.