pgadmin3 dark theme for Windows?

pgAdmin 4 v4 has an inbuilt dark theme in it.

File --> Preferences --> Miscellaneous --> Themes

Select dark theme.

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You can download the latest version of pgadmin here.

Once you install, it overwrites your old version. Goodluck


The only way you can have a dark background is

File --> Options --> Query tool --> Colours

select a custom background and also change the font colour according to the background. pgadmin documentation

Update:

In pgadmin4: File --> Preferences --> Miscellaneous --> Themes