Codex Theme Blog

Guides, comparisons, and updates on Codex themes, Codex Skins, and customization for the Codex CLI and desktop app.

Layered obsidian, ivory, lime, and violet theme swatches

Guide2026/07/17

Codex Themes: A Practical Guide to Customizing the Desktop App

Understand native Codex themes, choose a readable palette, import safely, and know when an external Skin tool is a different risk class.

A native color palette separated from a layered external skin system

Comparison2026/07/17

Codex Themes vs. Skins: Native Customization and External Tools Explained

Compare native Codex themes and external Skin tools by capability, installation, trust boundary, updates, licensing, and restore path.

Five coordinated color fields arranged as a theme system

Tutorial2026/07/17

How to Create a Custom Codex Theme

Design a coherent Codex palette for surfaces, ink, accent, semantic colors, fonts, and code highlighting without sacrificing readability.

A precise lime theme swatch moving into an obsidian frame

Tutorial2026/07/17

How to Import a Custom Theme in the Codex Desktop App

A version-aware checklist for importing a native Codex theme, checking readability, and restoring the previous appearance.

A violet custom swatch returning to a clean ivory baseline

Support2026/07/17

How to Reset or Remove a Codex Theme

Return Codex to a built-in appearance and distinguish a native theme reset from the restore procedure required by an external Skin engine.

Two matching theme swatches connected by a careful verification line

Security2026/07/17

How to Share and Export a Codex Theme Safely

Review a Codex theme share string for privacy, provenance, compatibility, and licensing before sending it to someone else.