@michaelfairburn Thank you for the feedback, unfortunately, the same issue, even worse, would be with white numbers on the opposite side of the specter. So this won't be changed now, because of the still better visibility of black numbers.
@michaelfairburn Thanks for the suggestion. In the meantime, you can use the right and left arrow keys on your keyboard to move the timeline forward and backward. Personally, I find that easier than clocking on the timeline to move it.