15 evidence-aware guides · Checked July 17, 2026

From first image to safe restore.

Use the short path when everything works. Use the evidence path when platform support, app updates, CDP, checksums, or permissions need a precise answer.

01

Install

How to install a Codex theme on macOSUse the original repository, preserve the signed Codex application, verify the live renderer, and rehearse restore.macOS · 8 min How to install a Codex theme on WindowsFollow the current PowerShell install, launch, verify, and restore workflow without changing WindowsApps.Windows · 9 min

02

Customize

How to change the Codex background on macOSPrepare a readable wallpaper, export it locally, and pass only documented image and color flags to the macOS customizer.macOS · 7 min

03

Design

Customize Codex theme colors without losing readabilityBuild an accent system for focus, secondary information, and highlights instead of choosing three decorative swatches.All platforms · 7 min Best image size for a Codex themeChoose resolution, aspect ratio, composition, and format that survive desktop crops without wasting bytes.All platforms · 6 min

04

Export

Export and import a Codex theme recipeMove color, crop, surface, and readability settings without embedding a private wallpaper.All platforms · 6 min

05

Compatibility

Can you change the Codex background on Windows?Understand the current Windows limitation and what a website wallpaper export can—and cannot—do today.Windows · 6 min

06

Safety

Is Codex Dream Skin safe?Understand the local CDP trust boundary, package integrity, process identity, and practical risk reduction.All platforms · 10 min Verify a Codex theme SHA-256 checksumConfirm that wallpaper, recipe, and token files match the transparent package manifest before use.All platforms · 5 min Understand the CDP risk behind Codex themesLearn why loopback helps, why it is not authentication, and how to reduce the local attack surface while a theme runs.All platforms · 11 min

07

Troubleshoot

Fix a Codex theme after an app updateDiagnose selector drift, stale injected state, and version mismatch without patching the official application.All platforms · 8 min Codex theme not loading: a safe diagnostic pathTurn a blank, partial, or missing theme into a specific next action without random reinstall loops.All platforms · 9 min Troubleshoot a Codex theme on WindowsDiagnose PowerShell execution, Store-package discovery, port ownership, config encoding, and verification failures.Windows · 10 min Troubleshoot a Codex theme on macOSResolve permissions, application identity, image payload, launchd state, and verification problems without modifying Codex.app.macOS · 10 min

08

Restore

Restore the default Codex appearanceStop the injected theme safely, preserve unrelated processes, and return to the official interface.All platforms · 6 min