Examine source code of folk pattern

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "folk pattern",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(225, 234, 239)",
      "toolbar_text": "rgb(255, 203, 0)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(237, 195, 35)",
      "toolbar_field": "rgb(65, 164, 159)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(174, 0, 36)",
      "popup": "rgb(255, 242, 195)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_hover": "rgb(43, 42, 50)",
      "tab_loading": "rgb(174, 0, 36)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cbb4a557-2ff5-47c5-ae24-e18255c319c4}"
    }
  }
}