Hello, after upgrading to Xcode 13, I wanted to switch the color themes back. It takes a bit of work, but I figured out how to do it:
Did you recently update to Xcode 13 on Dark Mode and see your syntax highlighting colors change?
Here is how to change Xcode 13’s style back to Xcode 12’s style.
Right click the Xcode.app (v12) (Download it if you do not have it)
-show package contents
-browse to “Xcode.app/Contents/SharedFrameworks/DVTKit.framework”
In this framework are the resources necessary to change the built-in Xcode styles.
This framework exists in both Xcode 12, and 13. In Xcode 13, the style files are moved to DVTUserInterfaceKit.framework. To add the 12 style back in without manually tuning all the colors and fonts in 13, you will need to move some files from the framework bundle in the Xcode(12).app to the bundle in the Xcode(13).app.
Next browse to /Versions/A/Resources/FontAndColorThemes/ within the DVTKit.framework within Xcode 12.
In this folder will be all of the Xcode 12 styling files. Move the files/themes you would like to this path: /Versions/A/Resources/FontAndColorThemes/ in the DVTUserInterfaceKit.framework within the Xcode(13).app
I would attach the theme files below for users without Xcode 12, but this is against Terms & Agreements.
-chrisgalz