fei-away/codex-dream-skin

Codex Dream Skin is a small utility that changes the visual look of the Codex desktop app, an AI coding tool, without touching the official installation. It works by injecting a custom background image into the app locally, through a debugging protocol connection that only listens on the same machine, so the original program files and its code signature are never modified. The project is explicit that it is not an official OpenAI product. Most users do not need to touch any code. They install the official Codex app once, then download a ready made installer for macOS or Windows from the project's GitHub Releases page and run it like any normal app. Developers who prefer to run things from source can instead use platform specific scripts included in the repository, one for macOS and one for Windows. The tool replaces the app's background with a single wide image while keeping the sidebar, suggestion cards, project picker, and input box as fully working native elements rather than a static screenshot pasted over the window. Users can save more than one theme and switch between them from the macOS menu bar or the Windows system tray, and they can restore the official appearance with one click at any time. The repository ships with a default theme called Gothic Void Crusade, contributed by a community member, along with a gallery of eight concept images showing other possible visual styles. Those concept images are not ready to use directly since they include mockup interface elements, the project links to prompt guides for generating clean background images instead. A second theme built around a real person's photo is kept in the source repository for reference only and is not included in the public installer, because of image rights concerns. The project notes it only changes the app's appearance and never touches API keys or model provider settings, which stay controlled separately. It is released under the MIT license.