Examine source code of Sparkling Nights

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Sparkling Nights",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(30, 40, 154)",
      "toolbar_text": "rgb(192, 192, 192)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(105, 109, 187)",
      "tab_line": "rgb(176, 99, 255)",
      "popup": "rgb(204, 204, 204)",
      "popup_text": "rgb(98, 102, 183)",
      "tab_loading": "rgb(176, 99, 255)"
    }
  }
}