Examine source code of purplies

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "purplies",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(230, 225, 209, 0.45)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0.97)",
      "toolbar_field_text": "rgb(4, 4, 4)",
      "tab_line": "rgba(255, 255, 255, 0.76)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgba(255, 255, 255, 0.76)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5dbd167d-63f6-4a87-8ef2-ec27e9ac7f5d}"
    }
  }
}