Examine source code of Edgerunners' Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Edgerunners' Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.94)",
      "toolbar_text": "rgb(98, 157, 180)",
      "frame": "rgb(98, 64, 51)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(225, 0, 91)",
      "tab_line": "rgb(10, 62, 91)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(17, 0, 33)",
      "tab_loading": "rgb(10, 62, 91)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4ffc4ec8-6425-4d99-8161-d84978312317}"
    }
  }
}