Custom themes are currently not supported for Arduino IDE 2.0.x.
Learn how to install a .zip packaged theme for Arduino IDE 1.8.
Open the Sketchbook folder. By default it is located in:
You can check the location in Preferences, under Sketchbook location:
File > Preferences.
Arduino > Preferences
If open, close Arduino IDE.
In the sketchbook folder, create a subfolder named
Drag and drop the custom theme .zip file into the
themesubfolder you created.
Note: The custom theme must be in the root of the .zip file, NOT in a subfolder.
The folder structure should look as follows:
<Sketchbook folder> |_ theme |_ MyCoolTheme.zip |_ syntax | |_ etc... |_ theme.txt |_ etc...
Multiple themes can be installed by adding multiple .zip files and the folder structure should look as follows:
<Sketchbook folder> |_ theme |_ MyCoolTheme.zip | |_ syntax | | |_ etc... | |_ theme.txt | |_ etc... |_ MyOtherCoolTheme.zip |_ syntax | |_ etc... |_ theme.txt |_ etc...
Open the Arduino IDE, select the theme from the Arduino IDE at File > Preferences > Theme menu.
Restart the Arduino IDE again.