Examine source code of White Zigzag

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "White Zigzag",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-007-ea06061a8f8be943739a27dace8dc532.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(247, 247, 247)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(232, 232, 232)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(232, 232, 232)",
      "button_background_hover": "rgb(232, 232, 232)",
      "popup_border": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(232, 232, 232)",
      "toolbar_field_border": "rgb(232, 232, 232)",
      "toolbar_top_separator": "rgb(232, 232, 232)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5b30c63c-fa83-4c6f-b588-318c1b3962c7}"
    }
  }
}