How to change color f text in the Admin UI Header?

Through the Theme Settings, I can change the color of the text in the header for the Self Service Portal, but I am unable to change the color of the xtet in the Admin UI. Text is ALWAYS WHITE. 

I had a demo today and their main website uses a light grey for the background, with dark grey text. I was able to mimic this for the portal, but unable to provide this in the Admin UI. I could change the background color to light grey, but the white text was almost impossible to read, so I had to use darker colors so the white text would show up.

Will this be changed any time soon?

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