Studio
Custom Codex themes for macOS & Windows

Your Codex.
Your atmosphere.

Design a readable desktop skin, preview it live, and export the recipe locally.

Build a skin Browse themes
Portal Studio abstract workspace background
Portal Studio•••

Make this workspace calm, readable, and unmistakably mine.

C

I’ll keep the real Codex controls intact and tune the atmosphere around them.

Ask Codex to build, review or explain...↑
Local image processingComplete theme ZIPOpen-source helper (MIT)

Tune the room,
not the controls.

Your image is not uploaded to a server.

Portal Studio abstract workspace background
Portal Studio•••

Make this workspace calm, readable, and unmistakably mine.

C

I’ll keep the real Codex controls intact and tune the atmosphere around them.

Ask Codex to build, review or explain...↑
Current skinPortal Studio

PNG, JPEG, or WebP. Wide 16:9 artwork works best.

100% local processingImages are never uploaded, stored, or sent to a server. Supports PNG, JPEG, and WebP.

Focus only affects a cropped direction. When the image fits the preview height, vertical movement may not be visible; the exported theme still saves the position.

Text contrast17.34:1
AAA

Passes WCAG AA for normal text. Still review every preview screen.

DOWNLOAD COMPLETE

Your theme ZIP is ready.

Codex itself does not have an Import ZIP command. This theme pack works with the open-source Codex Dream Skin project.

macOS

  1. Install Codex Dream Skin from its GitHub project.
  2. Copy the command below. It extracts and applies the theme.
~/Library/Application Support/CodexDreamSkinStudio/themes/codex-skin-lab-portal-studio/Read the macOS guide

Windows

  1. Install Dream Skin from the project's windows folder.
  2. Copy the command, reopen the tray, then choose it under Saved themes.
%LOCALAPPDATA%\CodexDreamSkin\themes\codex-skin-lab-portal-studio\Read the Windows guide
View Dream Skin on GitHub
Forest Observatory skin background
Works with Codex Dream Skin

Apply themes locally.

Codex Dream Skin applies the theme on this computer while keeping the official Codex app unchanged.

Reversible local workflowYour artwork, your rightsNative controls stay interactive
View Dream Skin on GitHub

Your image stays on this device.

ChoosePick an original preset or upload your own image.
TuneSet the real focal point, safe area, and cross-platform colors.
ExportDownload a complete Dream Skin ZIP with its actual artwork.
Codex Skin Lab | Build Custom Codex Desktop Themes