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Cobaltz Theme

A refined dark theme inspired by Cobalt2, featuring deep blue tones, vibrant syntax highlighting, and a signature golden cursor. Available for multiple editors and terminals.

Cobaltz Theme

Features

  • Deep blue background (#0F2438) that's easy on the eyes
  • Vibrant, carefully chosen syntax colors
  • Signature golden cursor (#FFCC00)
  • Blue status bar accent (#3478C6)
  • Both dark and light variants
  • Consistent experience across all supported platforms

Supported Platforms

Platform Dark Light Installation
Zed Instructions
VS Code / Cursor / Kiro Instructions
KiroCrew Instructions
Obsidian Instructions
Ghostty Instructions
iTerm2 / Zsh - Instructions
Pi Coding Agent - Instructions

Color Palette

Dark Theme

Element Color Preview
Background #0F2438 #0F2438
Foreground #FFFFFF #FFFFFF
Cursor #FFCC00 #FFCC00
Keywords #F1A23A #F1A23A
Functions #82AAFF #82AAFF
Strings #6FD640 #6FD640
Variables #ED99FA #ED99FA
Comments #3B86F7 #3B86F7
Types #80CBC4 #80CBC4
Numbers #EA79A3 #EA79A3

Light Theme

Element Color Preview
Background #FAFBFC #FAFBFC
Foreground #0F2438 #0F2438
Cursor #2563EB #2563EB
Keywords #D97706 #D97706
Functions #2563EB #2563EB
Strings #059669 #059669
Variables #9333EA #9333EA
Comments #6B7280 #6B7280

Installation

Zed

  1. Copy cobaltz-zed/Cobaltz.json and/or cobaltz-zed/Cobaltz-Light.json to ~/.config/zed/themes/
  2. Open Zed Settings and select "Cobaltz" or "Cobaltz Light" as your theme

VS Code

From VSIX (Local Install)

  1. Navigate to the cobaltz-vscode directory
  2. Run npx vsce package to create the .vsix file
  3. In VS Code: Cmd+Shift+P → "Install from VSIX" → select the file
  4. Select "Cobaltz" or "Cobaltz Light" from Color Theme settings

Manual Install

Copy the cobaltz-vscode folder to:

  • macOS: ~/.vscode/extensions/cobaltz-theme
  • Windows: %USERPROFILE%\.vscode\extensions\cobaltz-theme
  • Linux: ~/.vscode/extensions/cobaltz-theme

Works with VS Code forks: Cursor, Windsurf, Kiro, etc.

KiroCrew

Cobaltz for KiroCrew is a standalone level-1 theme pack with dark and light palettes, readable chat and code surfaces, and Cobaltz-inspired file diffs.

  1. Clone or download this repository.
  2. In KiroCrew, open Settings → Display → Install theme.
  3. Select the cobaltz-kirocrew folder from your clone.
  4. Select Cobaltz from the theme picker. KiroCrew uses the corresponding palette when you switch between dark and light appearance.

For pack details and update instructions, see cobaltz-kirocrew/README.md.

Obsidian

  1. Copy the cobaltz-obsidian folder to your vault's .obsidian/themes/ directory
  2. Rename it to Cobaltz
  3. Go to Settings → Appearance → Themes → Select "Cobaltz"

The theme automatically switches between dark and light based on your system preference.

Ghostty

  1. Copy theme files to your Ghostty themes directory:

    mkdir -p ~/.config/ghostty/themes
    cp cobaltz-ghostty/cobaltz cobaltz-ghostty/cobaltz-light ~/.config/ghostty/themes/
  2. Add to ~/.config/ghostty/config:

    # Auto-switch based on system appearance
    theme = dark:cobaltz,light:cobaltz-light
    

Pi Coding Agent

Install the Cobaltz theme for Pi Coding Agent:

Option 1: Symlink

mkdir -p ~/.pi/agent/themes
ln -s "$(pwd)/cobaltz-pi/cobaltz.json" ~/.pi/agent/themes/cobaltz.json

Option 2: Launch with theme flag

pi --theme ./cobaltz-pi/cobaltz.json

Option 3: Set in settings

Add to ~/.pi/agent/settings.json:

{
  "theme": "cobaltz"
}

iTerm2 / Zsh

  1. iTerm2 Colors: Import cobaltz-zsh/cobaltz.itermcolors via Preferences → Profiles → Colors → Color Presets → Import

  2. Zsh Theme:

    cp cobaltz-zsh/cobaltz.zsh-theme ~/.oh-my-zsh/themes/

    Then set ZSH_THEME="cobaltz" in ~/.zshrc

  3. Font: Use a Powerline-patched font or enable "Use built-in Powerline glyphs" in iTerm2

Screenshots

Zed Editor (Dark)

Zed Dark

Zed Editor (Light)

Zed Light

Kiro Editor (Dark)

Kiro Dark

Kiro Editor (Light)

Kiro Light

Contributing

Contributions are welcome! Feel free to:

  • Report issues
  • Suggest improvements
  • Add support for new platforms
  • Submit pull requests

License

MIT License - see LICENSE for details.

Credits

  • Inspired by Cobalt2 by Wes Bos
  • Color scheme refinements by Praveen Chamarthi

Author

Praveen Chamarthi

About

Cobalt2-inspired theme with vibrant syntax colors — supports, Ghostty, iTerm2/Zsh, VS Code, Kiro, Obsidian, Zed

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