Please try to use https://plugins.jetbrains.com/plugin/11938-one-dark-theme/

One Dark theme for IntelliJ IDEA, PhpStorm, PyCharm, RubyMine, WebStorm

1. Go to File | Import Settings... and specify the idea-one-dark-theme directory or the settings.jar file. Click OK in the dialog that appears.

2. Restart IntelliJ IDEA

3. Go to Preferences | Editor | Colors & Fonts and select one of the new color themes.

1. Copy One Dark.icls to your IntelliJ IDEA preferences color directory. The directory varies, depending on which JetBrains IDE you are using.

   The colors directory may need to be created.

   It is typically in:

   Mac OS X

   • IntelliJ IDEA: ~/Library/Preferences/IntelliJIdea{version}/colors
   • WebStorm ~/Library/Preferences/WebStorm{version}/colors
   • PyCharm ~/Library/Preferences/PyCharm{version}/colors

   Windows

   • IntelliJ IDEA %USERPROFILE%\.IdeaIC{version}\config\colors
   • PyCharm %USERPROFILE%\.PyCharm{version}\config\colors

2. Restart IntelliJ IDEA

3. Go to Preferences | Editor | Colors & Fonts and select one of the new color themes.

• Python
• Django/Jinja2 template
• CoffeeScipt
• JavaScript
• CSS
• LESS
• YAML
• JSON
• HTML
• XML
• Golang
• Java
• Ruby
• PHP
• UI theme

• Wali Akande