Examine source code of Reverse Discord Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Reverse discord theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-025-ffb27cfded66d27a465aeffe41e9fe61.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(84, 84, 84)",
      "toolbar_text": "rgb(114, 137, 218)",
      "frame": "rgb(84, 84, 84)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(114, 137, 218)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(114, 137, 218)",
      "popup": "rgb(84, 84, 84)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(114, 137, 218)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c76c9082-be90-4750-ab28-fab35aa60ba3}"
    }
  }
}