Examine source code of Abstract Desert

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Abstract Desert",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(239, 238, 225)",
      "toolbar_text": "rgb(42, 43, 32)",
      "frame": "rgb(201, 190, 142)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(79, 76, 56)",
      "tab_line": "rgb(248, 237, 112)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(120, 120, 98)",
      "tab_loading": "rgb(248, 237, 112)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bd1f00b6-5bf2-4d9d-a9c0-406344080df2}"
    }
  }
}