Techniquices

In DBeaver, "Ctrl+/" is the default shortcut to Toggle Line Comments. However, in keyboards without a dedicated / key, this may not work out of the box. In my case, the / is obtained with "Shift+7", which means I'd need to set "Ctrl+Shit+7" as the shortcut,  which DBeaver uses by default as the shortcut to "Activate results/panel": So, to set enable the Toggle Line Comments, I needed to remove the "Activate results/panel" configuration from the Preferences and I'm now able to use "Ctrl+Shit+7" for the Toggle Line Comments.

From:  https://docs.microsoft.com/en-us/answers/questions/104915/problem-with-office-theme-colors-office-2019-vlc-o.html You could try to navigate to Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common in Registry Editor, then modify the registry key value.  Please note, before you modify it, back up the registry for restoration in case problems occur. If you need to set Black as Theme color, you may enter 4 as the Value Data. (Colorful is 0, Dark Grey is 3, Black is 4 and White is 5) Then you may check whether this issue persists.