Examine source code of Killer Network Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "KillerNetworkTheme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(8, 8, 223)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(10, 0, 90)",
      "tab_background_text": "rgb(255, 4, 9)",
      "toolbar_field": "rgb(54, 58, 89)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(196, 38, 178)",
      "popup": "rgb(31, 34, 61)",
      "popup_text": "rgb(0, 108, 232)",
      "tab_loading": "rgb(196, 38, 178)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d711e4e4-a0eb-40f5-aae8-c2075809bbcd}"
    }
  }
}