Examine source code of Golden grad

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Golden grad",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 247, 215, 0.3)",
      "toolbar_text": "rgb(74, 42, 0)",
      "frame": "rgb(196, 125, 0)",
      "tab_background_text": "rgb(29, 0, 140)",
      "toolbar_field": "rgba(255, 235, 215, 0.5)",
      "toolbar_field_text": "rgb(74, 42, 0)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(255, 208, 126)",
      "popup_text": "rgb(29, 0, 140)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f45f48a9-0b86-4e7e-9b3c-61e0492089fd}"
    }
  }
}