Examine source code of Karasuno Haikyuu

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Karasuno Haikyuu",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center",
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(168, 108, 25, 0.8)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(148, 157, 173)",
      "toolbar_field": "rgba(0, 0, 0, 0.2)",
      "toolbar_field_text": "rgb(176, 154, 28)",
      "tab_line": "rgb(176, 154, 28)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(184, 60, 22)",
      "tab_loading": "rgb(176, 154, 28)"
    }
  }
}