Level/Pan Meter Settings Window Error

I am trying to edit the level meter colours. It appears that whenever the focus is taken away from the edit window, I am unable to apply or commit any changes or do any further editing in the window. I am simply receiving the system error audio basically telling me that the edit window is unresponsive.

This occurs if I choose the classic colour picker or even if I simply navigate away from Wavelab to a text file that contains the colour values I want to apply. In short, as soon as the focus of that window is lost, it loses all responsiveness.

Unless I choose an existing colour in the preset grid of colours I am unable to do any edits in that window.

I want to apply specific rgb values. Can someone at Steinberg please tell me how I can do this without losing window functionality?