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Codex CLI.

HackerBlue for Codex CLI is a dark syntax theme for Codex CLI: the code blocks and diffs it prints in deep navy, steel-blue text and one cyan signal. One payment for the theme, updates included at no extra charge, and up to three personal devices.

Choose themes

$2.99 for Codex CLI, less per theme when you pick more.

One-time payment. Limited-time offerAll 32 themes for $29.99 $92.69 if bought singlyEnds 15 November 2026

One-time purchase / 3 personal devices

Codex CLI's theme picker with hacker-blue selected, previewing a diff: removed lines on a muted red tint, added lines on a blue tint, and code in steel blue and cyan on a navy background.

Codex CLI 0.156.1 running on Linux, in a Hacker Blue terminal: the /theme picker previewing hacker-blue. The theme colours the code and diff on the right.

How to install

Three steps in your device's terminal. Every command is exactly what you type; copy it, paste it, press Enter.

  1. Put the HackerBlue program on your device

    Linux or macOS: Terminal
    curl -fsSL https://hackerblue.dev/install.sh | sh
    Windows: PowerShell
    irm https://hackerblue.dev/install.ps1 | iex

  2. Sign in

    Terminal
    hackerblue login

    A page opens in your browser; sign in to your Hacker Blue account and choose Approve.

  3. Install the Codex CLI theme

    Terminal
    hackerblue install codex-cli

    Start Codex CLI and type /theme: hacker-blue is selected. Choose another theme there to go back.

Your own themes are never touched, and a theme you made called hacker-blue is never overwritten.

Updates come with your licence: hackerblue update codex-cli when a newer version is out. hackerblue uninstall codex-cli removes it and restores your previous theme selection, keeping your later settings edits. Every command, and the rest of the guide: the install guide.

Codex CLI, default and in HackerBlue

The same view twice. The switch changes only the theme.

Codex CLI's main screen in its stock look: the OpenAI Codex banner and message prompt on a dark grey screen. Codex CLI's main screen in HackerBlue: the same screen on deep navy with steel-blue text and a blue prompt panel.

Codex CLI 0.160.0 running on Linux, its main screen in the stock look and in HackerBlue. Captured from the running app in a throwaway profile.

Codex CLI belongs to its owner; Hacker Blue is not affiliated with or endorsed by it.

The theme

HackerBlue for Codex CLI is a syntax-highlighting theme in Codex CLI's own theme format. It colours the code in Codex's answers and the added and removed lines in its diffs; keywords, strings, functions and comments each get their own steel-blue or cyan, on a navy tint that keeps every line readable.

What it does not change: the rest of Codex CLI's interface, prompts, menus, status lines, uses your terminal's own colours, and Codex has no setting to change that. The theme looks best in a dark terminal. It uses no network and adds nothing to Codex except one theme file.

It was made and tested with Codex CLI 0.156.1 on Linux, and it needs a Codex CLI that supports custom themes; if /theme exists in your Codex, it does.

What the purchase includes

one-time
  • Purchase One-time

    One payment for HackerBlue for Codex CLI. There is no subscription and nothing renews.

  • Updates Included

    Updates Hacker Blue publishes for this theme come with the licence at no extra charge; a version change never asks you to pay again.

  • Devices 3 active

    The licence covers up to three personal devices active at the same time, and you can deactivate one from your account page.

  • Delivery HackerBlue CLI

    The CLI downloads and installs the theme on an authorised device.

Pricing for Codex CLI

The purchase runs on Whop, and Whop shows the price, currency and taxes before you pay. Buying ties the licence to a Hacker Blue account, which you use with Google or an email address and a password.

Choose themes

$2.99 for Codex CLI, less per theme when you pick more.

One-time payment. Limited-time offerAll 32 themes for $29.99 $92.69 if bought singlyEnds 15 November 2026

HackerBlue Complete is the other one-time product: it includes the Codex CLI theme today and the themes added to Complete later, under the same kind of licence. Pricing compares the two.

Release notes

What changed in each release. Updates are included with the licence.

1 release

Each release has its own version. Versions follow semantic versioning:

  • Major: the look changes noticeably.
  • Minor: support for new parts of the app.
  • Patch: fixes.

The newest release is first.

  1. 1.0.024 September 2026

    First release.

Terms, support and the rest of the family

License sets out what the purchase lets you do with the theme files; three active personal devices, no redistribution or resale. Refund covers refunds and the EU, EEA and UK 14-day withdrawal right, and Legal has the terms of sale. Contact has the ways to reach us.

The rest of the family

32 themes are available now.

31 themes