Jetbrains Overflow (rainglow) Darker Colour Scheme
Modified version of the Overflow rianglow theme to suit my IDE
Open up Preferences/Settings and navigate to Editor -> Color Scheme, to the right of the scheme dropdown click the three vertical dots and choose Import Scheme... selecting the file downloaded from this repository.
The theme should then be available to choose as Overflow Rainglow Darker (clnt), select and hit apply.
I've also created some other themes/plugins to complement this colour scheme, you can find them here:
avit-orange-dark - orange version of popular avit zsh theme.
hyperterm-material-darker - fork of the popular Hyper Material theme made a little darker!