Sorry you are having this issue, are you by any chance using Window’s classic theme? (I can tell by the table headers). It’s known that Darkest Dark doesn’t work properly when using a windows classic theme. This is because it does not allow some customizations.
For now the workaround is to change the windows theme to the default one at Windows Control Panel > Appearance and Personalization > Personalization.
Also we are working on a feature that will allow users to select different type of themes, some of them will actually look better in a light-based theme like windows classic theme (details here).
Cheers!
Aaron Lara
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This reply was modified 7 years, 4 months ago by Aaron Lara.
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This reply was modified 7 years, 4 months ago by Aaron Lara.