Introduction

The DeepSeek Harness Web interface provides dark and light modes by default, but in its plugin-based ecosystem, developers can further customize the UI style. If you prefer a more nostalgic theme or simply want to experience the desktop aesthetics of 1997, you can use the dsh-retro-mac plugin.

The following section introduces the dsh-retro-mac plugin, developed by Leyan0365, which restores the DeepSeek Harness Web interface to the classic Mac OS 8/9 Platinum style.

Plugin Overview

dsh-retro-mac is a skin plugin designed for the DeepSeek Harness Web GUI. Its core goal is to provide a pixel-level faithful experience, including platinum-gray tones, the Chicago font, pure CSS striped wallpaper, and classic embossed controls.

This plugin is fully self-contained and does not require downloading external images or font resources. All styles and icons are implemented inline via code.

Core Features

After verification, this plugin includes the following features:

  • Multiple theme support: Provides two skins and four theme combinations. The skins are Platinum (light) and Graphite (dark), and the accent color can be switched between Classic Blue and System Teal.
  • Full design token coverage: The plugin covers 103 design tokens required by the Web interface, ensuring no modern blue tints remain.
  • Zero external resources: The Chicago font is inlined, the wallpaper is drawn with pure CSS, and the entire plugin file size is kept to 47KB, with no network requests needed to load resources.
  • Classic controls and animations: Implements raised buttons, square scrollbars, progress bar animations, and hard shadow effects.
  • Happy Mac splash screen: Includes an inline SVG Happy Mac startup splash screen, which can be enabled or disabled in settings.
  • Persistence and accessibility: Users’ skin selection, accent color, and splash screen preferences are saved in LocalStorage. It also supports accessibility settings such as prefers-reduced-motion.

Installation

Before installing, make sure the DeepSeek Harness Web profile has already been installed.

Method 1: Use the official command
This is the most direct installation method. Execute the following command in your terminal:

dsh plugin --profile web add dsh-retro-mac

Method 2: Manual addition
If you need to manage dependency versions manually, add the following dependency to the Web profile’s package.json:

{
  "dependencies": {
    "dsh-retro-mac": "^0.1.0"
  }
}

After adding the dependency, restart the Web profile and refresh the page for the plugin to take effect.

Usage

After successful installation, the DSH Web interface will include a settings row named “Retro Mac”. You can configure it using the following steps:

1. Switch skin
Select the Skin option in the settings row. The following modes are supported:
* System: Uses the default DSH skin.
* Platinum: Classic light Platinum skin.
* Graphite: Classic dark Graphite skin.

2. Switch accent color
Select from the Accent option:
* Classic Blue: Classic blue highlight.
* System Teal: System default teal highlight.

3. Toggle the Happy Mac screen
In the Splash option, you can enable or disable the Happy Mac startup splash screen.

Requirements and Notes

To use this plugin, the following prerequisites must be met:

  • Web Profile: The DeepSeek Harness Web profile must be enabled (dsh web or dsh --profile web).
  • Runtime environment: Required dependency libraries such as React and Cordis must be supported, and the application must run in a modern browser that supports ES Modules and CSS Custom Properties.
  • Zero intrusion: When you switch back to the default System skin, the interface returns to a pixel-level consistent state, with no residual plugin styles.

This plugin is released under the MIT license.

Conclusion

dsh-retro-mac is a plugin that applies a nostalgic style to the DeepSeek Harness Web interface. It does not rely on external resources and uses pure CSS and inlined fonts to deliver the classic visual experience of Mac OS 8/9. It is suitable for developers who want to add a touch of retro atmosphere to development, debugging, or daily use.

Plugin directory page
GitHub repository