Examine source code of U-Next Pirates

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "U-Next Pirates 1.1",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(10, 144, 207, 0.61)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(9, 126, 180)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(10, 144, 207, 0.64)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(19, 137, 193)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{28577971-c995-40f7-a3ab-fe294c42f056}"
    }
  }
}