Examine source code of Purple Goodness

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple Goodness",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-033-cf10aca0d9374ba108ef8e68a5f5e931.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(16, 9, 83)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(48, 39, 152)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(29, 18, 131)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(16, 9, 83)",
      "popup": "rgb(16, 9, 83)",
      "popup_text": "rgb(255, 255, 255)",
      "frame_inactive": "rgb(55, 42, 216)",
      "popup_border": "rgb(29, 18, 131)",
      "toolbar_bottom_separator": "rgb(16, 9, 83)",
      "toolbar_top_separator": "rgb(16, 9, 83)",
      "tab_loading": "rgb(16, 9, 83)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{52287c87-a290-4f5e-a2e4-29f55650a634}"
    }
  }
}