How to remove material theme (or reset to defaults) from IntelliJ / PyCharm?

Question

I have installed Material Theme UI and it made my IDE blackish. Later I decided to remove and and removed plugin. Unfortunately, this didn\'t give default colors back, some part

Answer 1

Another 2019 version (worked in my case):

• open the settings editor (File->Settings)
• search for Plugins page
• inside the Plugins page, search for the Material UI plugin and uninstall it
• search for Appearance & Behaviour->Appearance page
• select the theme you prefer (IntelliJ or Darkula or High contrast). If your theme is already selected, chose another theme, apply the changes, than select back your preferred theme.
• close IntelliJ (or PyCharm/WebStorm/etc)
• open .IntelliJIdea/config folder, usually it's in your home folder.
• remove the following files:
  • material_theme.xml
  • colors/_@user_Darcula.icls or colors/_@user_Dafault.icls (beware: you may loose custom configurations you may have done)

Done.