Examine source code of Abstract holes

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple waves",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(208, 194, 221, 0.5)",
      "toolbar_text": "rgb(239, 222, 255)",
      "frame": "rgb(34, 9, 66)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(208, 194, 221)",
      "toolbar_field_text": "rgb(34, 9, 66)",
      "tab_line": "rgb(145, 57, 255)",
      "popup": "rgb(208, 194, 221)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(145, 57, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f43055a6-563f-44dd-a410-96796032f1f6}"
    }
  }
}