Clone the GitHub repository and run ./open_app.sh. It builds the app on your Mac and opens it. You'll need Xcode Command Line Tools.

Which Logic versions does it support?

Logic Pro 12.3 and 12.4 from the Mac App Store. On other versions it stays off and Logic opens with its normal colors.

Does it modify Logic Pro?

No — it restyles the interface at launch without changing Logic on disk or requiring a re-sign.

How do I uninstall it?

Quit Logic and open it normally to get the default look back. To remove Theme4Logic completely, delete the app and the Theme4Logic folder in ~/Library/Application Support.

Yes — completely free and open source (MIT), with no paid tier.

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