Examine source code of Google style

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Google theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(66, 133, 244, 0.5)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(15, 157, 88)",
      "toolbar_field": "rgb(219, 68, 55)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(244, 180, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(66, 133, 244)",
      "ntp_background": "rgb(255, 255, 255)",
      "popup_border": "rgb(0, 193, 57)",
      "popup_highlight_text": "rgb(244, 180, 0)",
      "popup_highlight": "rgb(219, 68, 55)",
      "tab_selected": "rgb(244, 180, 0)",
      "toolbar_field_border": "rgb(244, 180, 0)",
      "toolbar_field_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(244, 180, 0)",
      "tab_loading": "rgb(244, 180, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{09967834-0d97-4335-8ec1-cef73a942897}"
    }
  }
}