Examine source code of birds feathers

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "birds feathers",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(27, 84, 216, 0.5)",
      "toolbar_text": "rgb(250, 247, 247)",
      "frame": "rgb(10, 244, 99)",
      "tab_background_text": "rgb(254, 249, 253)",
      "toolbar_field": "rgba(248, 55, 9, 0.01)",
      "toolbar_field_text": "rgb(243, 239, 238)",
      "tab_line": "rgb(250, 245, 249)",
      "popup": "rgb(13, 34, 218)",
      "popup_text": "rgb(10, 244, 54)",
      "tab_loading": "rgb(250, 245, 249)"
    }
  }
}