Hello again, @eivc1.
Unfortunately, a true dark mode isn't currently available within the QuickBooks Desktop product at this time. I understand the need for this and we're always working towards our product being accessible for everyone. I'm making sure I let our development team know this.
I'm linking this site as well for you to leave feedback for Desktop: QuickBooks Desktop Feedback.
Please let me know if there's anything else I can help with, I'm
