Examine source code of Hantomei [Vtuber]

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Hantomei [Vtuber] ",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png",
        "images/2.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center",
        "right center",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "no-repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 179, 216, 0)",
      "toolbar_text": "rgb(76, 76, 75)",
      "frame": "rgb(255, 212, 250)",
      "tab_background_text": "rgb(98, 102, 183)",
      "toolbar_field": "rgb(255, 212, 250)",
      "toolbar_field_text": "rgb(76, 76, 75)",
      "tab_line": "rgba(248, 112, 140, 0)",
      "popup": "rgb(255, 212, 250)",
      "popup_text": "rgb(98, 102, 183)",
      "button_background_hover": "rgba(248, 112, 140, 0.31)",
      "ntp_background": "rgb(255, 212, 250)",
      "ntp_text": "rgb(76, 76, 75)",
      "sidebar": "rgb(248, 112, 140)",
      "tab_selected": "rgb(255, 218, 255)",
      "toolbar_bottom_separator": "rgb(98, 102, 183)",
      "toolbar_field_border_focus": "rgb(255, 218, 255)",
      "toolbar_field_focus": "rgb(255, 218, 255)",
      "toolbar_field_highlight": "rgb(248, 112, 140)",
      "toolbar_field_separator": "rgba(76, 76, 75, 0)",
      "toolbar_top_separator": "rgba(13, 12, 12, 0)",
      "toolbar_vertical_separator": "rgba(210, 189, 189, 0)",
      "tab_loading": "rgba(248, 112, 140, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c06cf5b-a91d-4be2-9bc8-8eb09436ce12}"
    }
  }
}