Examine source code of Caramel lines

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Caramel lines",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(170, 81, 81, 0.75)",
      "toolbar_text": "rgb(255, 203, 219)",
      "frame": "rgb(255, 0, 44)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgba(255, 221, 209, 0.85)",
      "toolbar_field_text": "rgb(72, 0, 147)",
      "tab_line": "rgb(255, 249, 132)",
      "popup": "rgba(99, 0, 101, 0.75)",
      "popup_text": "rgb(255, 234, 194)",
      "tab_loading": "rgb(255, 249, 132)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d575d6a8-f9e7-4b9e-a243-d726e4f02c92}"
    }
  }
}