Gray theme

[Jopp-gh]

Is your feature request related to a problem? Please describe.
I don't get why Planify has a dark+blue accent theme, this one should be the standard dark theme.

Describe the solution you'd like
I like dark themes but a gray theme is missing (please see the example link at bottom page), bc nicely readable by day and night. I see the dark+blue theme as replacement for the default dark theme.

Describe alternatives you've considered
The 3rd theme could be a user theme, eg. a css file, if you don't want to add a gray theme.

Additional context
Example theme - Gimp

[permafrozen]

Hello, I am not sure if it helps, but you can style the program using your gtk theme. For example: