Examine source code of Purple & Black2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple & Black2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(40, 15, 63)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(121, 48, 173)",
      "toolbar_field": "rgb(0, 10, 20)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(131, 21, 214)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(131, 21, 214)",
      "ntp_background": "rgb(40, 15, 63)",
      "tab_loading": "rgb(131, 21, 214)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b34dcca3-5fa3-4817-a2fd-8421b3ff3b78}"
    }
  }
}