Examine source code of sunrise

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "sunrise",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(135, 172, 193, 0)",
      "toolbar_text": "rgb(248, 112, 140)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(242, 145, 145)",
      "toolbar_field": "rgba(255, 255, 255, 0.15)",
      "toolbar_field_text": "rgb(27, 213, 236)",
      "tab_line": "rgb(255, 109, 140)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(37, 125, 200)",
      "tab_loading": "rgb(255, 109, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{616eb879-32a5-45ca-a5ae-37386efad24a}"
    }
  }
}