Examine source code of Haikyuu.crows

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Haikyuu.crows",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png",
        "images/2.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom",
        "right bottom",
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "no-repeat",
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 249, 0, 0)",
      "toolbar_text": "rgb(4, 4, 4)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(7, 7, 7)",
      "toolbar_field": "rgba(255, 255, 255, 0.09)",
      "toolbar_field_text": "rgb(8, 8, 8)",
      "tab_line": "rgb(242, 128, 13)",
      "popup": "rgba(7, 7, 7, 0.85)",
      "popup_text": "rgba(249, 132, 40, 0.78)",
      "tab_loading": "rgb(242, 128, 13)"
    }
  }
}