Examine source code of Honkai Star Rail

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Honkai Star Rail",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(43, 36, 43)",
      "toolbar_text": "rgb(208, 154, 221)",
      "frame": "rgb(43, 36, 43)",
      "tab_background_text": "rgb(203, 117, 225)",
      "toolbar_field": "rgb(226, 207, 232)",
      "toolbar_field_text": "rgb(25, 24, 25)",
      "tab_line": "rgb(208, 154, 221)",
      "popup": "rgb(25, 24, 25)",
      "popup_text": "rgb(208, 154, 221)",
      "popup_highlight": "rgb(255, 255, 255)",
      "tab_loading": "rgb(208, 154, 221)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3437e9a2-1f10-49c3-ba55-f87498dec9a2}"
    }
  }
}