Examine source code of Fire Fox spirit

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Fox spirit",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.82)",
      "toolbar_text": "rgb(40, 29, 78)",
      "frame": "rgb(255, 119, 34)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0.6)",
      "toolbar_field_text": "rgb(40, 29, 78)",
      "tab_line": "rgba(0, 0, 0, 0)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(40, 29, 78)",
      "popup_border": "rgba(255, 119, 34, 0.4)",
      "toolbar_bottom_separator": "rgba(255, 255, 255, 0.5)",
      "toolbar_field_border_focus": "rgb(107, 77, 225)",
      "toolbar_field_border": "rgba(255, 118, 34, 0.2)",
      "toolbar_field_text_focus": "rgb(4, 4, 4)",
      "tab_loading": "rgba(0, 0, 0, 0)"
    }
  }
}