Examine source code of purple wonders

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "purple wonders",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(20, 19, 43)",
      "toolbar_text": "rgb(219, 219, 248)",
      "frame": "rgb(22, 41, 53)",
      "tab_background_text": "rgb(105, 116, 179)",
      "toolbar_field": "rgb(16, 15, 29)",
      "toolbar_field_text": "rgb(200, 192, 253)",
      "tab_line": "rgb(120, 120, 199)",
      "popup": "rgb(5, 5, 63)",
      "popup_text": "rgb(104, 110, 202)",
      "icons_attention": "rgb(196, 0, 255)",
      "icons": "rgb(167, 167, 245)",
      "tab_loading": "rgb(120, 120, 199)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3768cfd4-e210-47bf-85cc-d37d87ae3039}"
    }
  }
}