Examine source code of fractal997

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "fractal997",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(26, 12, 18, 0.2)",
      "toolbar_text": "rgb(251, 251, 251)",
      "frame": "rgb(248, 248, 248)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(101, 132, 181, 0)",
      "toolbar_field_text": "rgb(252, 252, 252)",
      "tab_line": "rgb(233, 245, 32)",
      "popup": "rgba(44, 40, 40, 0.8)",
      "popup_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(150, 132, 237)",
      "sidebar_border": "rgb(219, 214, 241)",
      "tab_loading": "rgb(233, 245, 32)"
    }
  }
}