Examine source code of discoelysium

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Disco Elysium",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(94, 101, 101)",
      "toolbar_text": "rgb(234, 192, 99)",
      "frame": "rgb(194, 202, 207)",
      "tab_background_text": "rgb(86, 84, 95)",
      "toolbar_field": "rgb(241, 241, 224)",
      "toolbar_field_text": "rgb(123, 127, 204)",
      "tab_line": "rgb(243, 205, 140)",
      "popup": "rgb(241, 241, 224)",
      "popup_text": "rgb(61, 64, 129)",
      "tab_loading": "rgb(243, 205, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{50955c20-ea4c-44ea-a057-a562f559c664}"
    }
  }
}