I want the grey shade as shown in previews but mine has white as default. I tried to search in file->settings but without much success. Also, I couldn't find Project->clean or any such option. Any help will be appreciated, thanks!
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                    http://stackoverflow.com/q/16579448/1012284 – Padma Kumar May 17 '13 at 06:25
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                    4If you want only change background on whatever theme you are Preferences > Editor > Color & Fonts > General > Default Text > Background. You could not do this on default theme hence you need to create a copy of default theme as android studio will guide you if you click on background selection rectangle. – Eftekhari Jul 12 '15 at 11:50
 
2 Answers
You can change it by going File => Settings (Shortcut CTRL+ ALT+ S) , from Left panel Choose Appearance , Now from Right Panel choose theme.

Android Studio 2.1
Preference -> Search for Appearance -> UI options , Click on DropDown Theme
Android 2.2
Android studio -> File -> Settings -> Appearance & Behavior -> Look for UI Options
EDIT :
Import External Themes
You can download custom theme from this website. Choose your theme, download it. To set theme Go to Android studio -> File -> Import Settings -> Choose the
.jarfile downloaded.
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                    @karthikprasad You can set to default theme provided by AS - Preference -> Search for Appearance -> UI options , Click on DropDown Theme. – Ronak Mehta Jan 13 '17 at 06:09
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                    that is not the answer to the question: I want to solely change the color of the backgorund, not the entire theme – MwBakker Jan 28 '21 at 12:45
 
How do I change Android Studio editor's background color?
Changing Editor's Background
Open Preference > Editor (In IDE Settings Section) > Colors & Fonts > Darcula or Any item available there
IDE will display a dialog like this, Press 'No'
Darcula color scheme has been set for editors. Would you like to set Darcula as default Look and Feel?
Changing IDE's Theme
Open Preference > Appearance (In IDE Settings Section) > Theme > Darcula or Any item available there
Press OK. Android Studio will ask you to restart the IDE.
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                    (Mac 10.10.3, AndroidStudio 1.2.2) This is still relevant, I had to do both of these. Changing just the IDE theme did NOT change the "event log" or the "editor" window. – tmac Jun 29 '15 at 14:56
 
