Examine source code of Blue Bliss

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blue Bliss",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0.48)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(86, 86, 86)",
      "tab_line": "rgb(25, 0, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 13, 255)",
      "tab_loading": "rgb(25, 0, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7a6990c9-de5b-4133-bea0-c8ecc26b277f}"
    }
  }
}