Examine source code of Random dark 2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Random dark 2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-026-829b05416f823e170310e7c826ad1bec.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(31, 34, 61)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(54, 58, 89)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(255, 0, 62, 0.63)",
      "popup": "rgb(31, 34, 61)",
      "popup_text": "rgb(215, 226, 239)",
      "ntp_background": "rgb(43, 42, 51)",
      "ntp_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(31, 34, 61)",
      "tab_loading": "rgba(255, 0, 62, 0.63)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4d49aa51-6f96-4aa5-b6ba-6814020d7c80}"
    }
  }
}