OneNord is a clean and vibrant theme that combines the Nord and Atom One Dark color palettes.
There is also a Neovim version of this theme, along with some extra color configs for your terminal if you are interested!
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Using IDE built-in plugin system:
Settings/Preferences > Plugins > Marketplace > Search for "OneNord" > Install Plugin
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Manually:
Download the latest release and install it manually using Settings/Preferences > Plugins > ⚙️ > Install plugin from disk...