If you are tired of the default look or darcula theme of IntelliJ (tested on 2017.x and 2018.x versions) or Android Studio , you can switch to a better looking theme . This is a very short process
IntelliJ with Obsidian.jar theme and darcula
1 Select your theme
color-themes.com has plenty of themes ( Sublime Text 2 , Monokai,) . Download the .jar file . Roboticket.jar is my current theme
2 Import the theme
Import to IntelliJ or Android Studio by going to File -> import settings -> and select the .jar file you downloaded.
Select All . press OK. Then Restart your IDE.
Note : if you use darcula theme previously , you will notice the new theme is only applied to the Text Editor. The light theme clearly contrasts
3 Appearance theme
On Mac , go to Preferences -> Appearance . You can also use the shortcut Preferences -> search theme on the top left search bar Next to Theme , Select Default . Or Darcula if you are using a dark theme .
Restart your IDE.