Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Latest commit


Failed to load latest commit information.
Latest commit message
Commit time


CI Status Swift macOS License: MIT

Gray Icon

Current version: 0.17.0 [Download]

Ever wanted to have light and dark apps live side-by-side in harmony? Well, now you can. With Gray you can pick between the light appearance and the dark appearance on a per-app basis with the click of a button.

To quote the late Michael Jackson:

It don't matter if you're black or white


Go into System Preferences > General and set your Mac to use dark appearance.

Note the application that you want to change the appearance of will have to restart before you see the changes. This is currently handled by Gray but be sure to not have any unsaved changes before you start tailoring your macOS experience.


How it works

Under the hood, Gray simply configures which app should be forced to use the light aqua appearance. You can achieve this without installing Gray by merely running a terminal command.

defaults write NSRequiresAquaSystemAppearance -bool YES

The command creates a new entry in the user's configuration file for the specific application. It does not alter the system in any way. So when you are done configuring, you can toss Gray in the trash if you like (I hope you don't :) )


If you want to build Gray using Xcode, you can follow these instructions.

git clone
cd Gray
pod install
open Gray.xcworkspace

Happy coding!

Supporting the project

If you want to support the development of this framework, you can do so by becoming a sponsor. ❤️


Christoffer Winterkvist,


Gray is available under the MIT license. See the LICENSE file for more info.