Examine source code of Kill La Kill Satsuki 3

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Kill La Kill Satsuki 3",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(188, 226, 242, 0.12)",
      "toolbar_text": "rgb(9, 18, 200)",
      "frame": "rgb(183, 226, 251)",
      "tab_background_text": "rgb(9, 18, 200)",
      "toolbar_field": "rgba(190, 224, 241, 0.12)",
      "toolbar_field_text": "rgb(9, 18, 200)",
      "tab_line": "rgb(9, 18, 200)",
      "popup": "rgb(194, 224, 242)",
      "popup_text": "rgb(9, 18, 200)",
      "tab_loading": "rgb(9, 18, 200)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b3959873-0a56-4231-8b29-90b6186c1be5}"
    }
  }
}