what is macos-window-styler fr?

macOS Window Styler is a native Mac app that lets you change how window title bars and borders look on macOS 26 and later, bringing back the visual style of older macOS versions or letting you build your own custom look. It comes with three ready made presets named Tahoe, Sequoia, and OS X, each recreating the window appearance from a different era of macOS, so you can pick one and see your whole desktop shift to that older, familiar chrome. Beyond the presets, the app gives you full control to customize window appearance yourself, with an instant preview so you can see changes before applying them, and a one click button to apply your chosen style system wide. The app is built entirely with SwiftUI, Apple's toolkit for building native Mac and iOS interfaces, and the whole project is open source, so anyone curious about how it works can read the code directly. To use it, you need a Mac running macOS 26 or later. You can either download a ready built version from the project's Releases page, or clone the source code and build it yourself using Xcode if you prefer to compile it on your own machine. The project explains that it builds on a discovery originally shared in a Reddit post, which found hidden system settings that control macOS window styling through terminal commands. This app simply wraps that discovery in an easy to use graphical interface, so people who are not comfortable typing commands in a terminal can still customize their windows with a few clicks. The developer credits the original Reddit research as the foundation the whole project was built on top of.