Examine source code of Amethyst Material

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Amethyst Material",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(3, 2, 25)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(5, 4, 28)",
      "tab_background_text": "rgb(247, 218, 249)",
      "toolbar_field": "rgb(24, 9, 68)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(215, 116, 204)",
      "popup": "rgb(26, 2, 43)",
      "popup_text": "rgb(255, 255, 255)",
      "icons": "rgb(215, 176, 236)",
      "ntp_background": "rgb(11, 3, 17)",
      "sidebar_highlight_text": "rgb(80, 10, 109)",
      "sidebar_highlight": "rgb(215, 176, 236)",
      "sidebar": "rgb(3, 18, 34)",
      "tab_loading": "rgb(215, 116, 204)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{739f7b50-eb2e-4a49-8cc5-e9b57d26f9f9}"
    }
  }
}