Codex theme guides
Start with a ready-made theme, learn the native format, or go further with an image-based skin. Each guide is written for a specific workflow.
All guides
Import and change a Codex theme
Start here
Follow the Codex App or CLI import flow in three steps and troubleshoot common format issues.
2 min · BeginnerRead guide
Create your own Codex theme
Native feature
Build a native theme string from colors, fonts, semantic values, and a compatible code palette.
10 min · IntermediateRead guide
Create an image-based Codex skin
Unofficial tool
Use the unofficial Dream Skin workflow to add an image, banner, and decorative layers on macOS or Windows.
15 min · AdvancedRead guide