Examine source code of Fall Lanterns

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Fall Lanterns",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(31, 34, 61, 0.18)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(14, 10, 9)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(41, 32, 29)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(255, 154, 52, 0.24)",
      "popup": "rgb(41, 32, 28)",
      "popup_text": "rgb(215, 226, 239)",
      "tab_loading": "rgba(255, 154, 52, 0.24)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2658d008-7682-4d4c-aa4d-a443ba9a0d16}"
    }
  }
}