Examine source code of ourple sporkle

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ourple sporkle",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(56, 21, 85)",
      "toolbar_text": "rgb(217, 47, 198)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(150, 96, 239)",
      "toolbar_field": "rgba(97, 15, 149, 0.48)",
      "toolbar_field_text": "rgb(241, 214, 255)",
      "tab_line": "rgba(205, 35, 185, 0.82)",
      "popup": "rgb(46, 46, 49)",
      "popup_text": "rgb(238, 238, 238)",
      "tab_loading": "rgba(205, 35, 185, 0.82)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f532e769-e278-4c35-a6f1-85fec280b13e}"
    }
  }
}