Examine source code of Hubbled

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Hubbled",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom",
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(171, 119, 128, 0.03)",
      "toolbar_text": "rgb(88, 255, 42)",
      "frame": "rgb(8, 2, 1)",
      "tab_background_text": "rgb(237, 246, 71)",
      "toolbar_field": "rgb(28, 41, 49)",
      "toolbar_field_text": "rgb(212, 212, 101)",
      "tab_line": "rgb(237, 242, 41)",
      "popup": "rgb(17, 39, 30)",
      "popup_text": "rgb(225, 229, 67)",
      "tab_loading": "rgb(237, 242, 41)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{771185b9-97de-411e-bfc2-2175dfe2ecfc}"
    }
  }
}