Examine source code of Safety Zone

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Safety Zone",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(52, 53, 55, 0.77)",
      "toolbar_field": "rgba(88, 239, 6, 0.42)",
      "toolbar_field_text": "rgb(115, 255, 102)",
      "tab_line": "rgb(143, 245, 23)",
      "popup": "rgb(2, 17, 28)",
      "popup_text": "rgb(229, 229, 9)",
      "tab_loading": "rgb(143, 245, 23)",
      "bookmark_text": "rgb(171, 255, 0)",
      "frame": "rgb(2, 17, 28)",
      "tab_background_text": "rgb(255, 255, 255)"
    }
  }
}