Examine source code of Spider-Ghost

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Spider-Ghost",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(8, 186, 252, 0.08)",
      "toolbar_text": "rgb(230, 3, 154)",
      "frame": "rgb(239, 248, 249)",
      "tab_background_text": "rgb(230, 3, 154)",
      "toolbar_field": "rgba(230, 3, 154, 0.15)",
      "toolbar_field_text": "rgb(230, 3, 154)",
      "tab_line": "rgb(8, 186, 252)",
      "popup": "rgba(8, 186, 252, 0.45)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgba(34, 25, 77, 0)",
      "tab_loading": "rgb(8, 186, 252)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6137068a-0c06-436a-967d-7ad02ef57723}"
    }
  }
}