Custom color palettes aren't exported

[ghanbak]

Describe the bug
On the Material Theme Builder website, when I add a custom color, it generates a tonal palette and scheme examples, but when I export it as DART and JSON, neither include the tonal palette.

The JSON file only includes the source color I input.

"extendedColors": [
    {
        "name": "Green",
        "color": "#86AF6B",
        "description": "",
        "harmonized": true
    }
],

The DART package includes the scheme data, but no color palettes (which is expected, since none of the other palettes are included).

To Reproduce
Steps to reproduce the behavior:

1. Go to Extended Colors
2. Add a custom color
3. Open the theme sidebar
4. Click the Export button
5. Select Material Theme (JSON)
6. Open the JSON file
7. Scroll to the palettes object

Expected behavior
I expect any custom colors to export the color palette and the scheme colors that are generated to be included in the JSON export.

Screenshots
The custom colors showing on the MTB site.

Desktop (please complete the following information):

• OS: MacOS
• Browser: Chrome
• Version: 146.0.7680.165 (Official Build) (arm64)

Additional context
I'm using the web version to create and export to JSON so I can import the themes into Figma because the plugin is super bad. But I can't get the color palettes I need since the export doesn't include everything that's needed.