Examine source code of The Vortex Ride

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "The Vortex Ride",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.png",
        "images/2.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "left top",
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x",
        "repeat-x",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(19, 98, 13, 0.16)",
      "toolbar_text": "rgb(80, 210, 89)",
      "frame": "rgb(144, 189, 123)",
      "tab_background_text": "rgb(124, 234, 103)",
      "toolbar_field": "rgba(84, 117, 136, 0.42)",
      "toolbar_field_text": "rgba(82, 31, 130, 0.96)",
      "tab_line": "rgb(35, 191, 77)",
      "popup": "rgba(45, 231, 168, 0.41)",
      "popup_text": "rgba(98, 102, 183, 0.69)",
      "button_background_active": "rgba(40, 73, 93, 0.24)",
      "button_background_hover": "rgba(40, 73, 93, 0.34)",
      "frame_inactive": "rgba(40, 73, 93, 0.24)",
      "icons_attention": "rgba(40, 73, 93, 0.41)",
      "icons": "rgba(40, 73, 93, 0.21)",
      "ntp_background": "rgba(84, 55, 232, 0.54)",
      "ntp_text": "rgb(154, 123, 216)",
      "popup_border": "rgb(35, 191, 77)",
      "popup_highlight_text": "rgba(40, 73, 93, 0.21)",
      "popup_highlight": "rgba(30, 138, 202, 0.29)",
      "sidebar_border": "rgba(40, 73, 93, 0)",
      "sidebar_highlight_text": "rgba(14, 103, 25, 0.24)",
      "sidebar_highlight": "rgba(40, 73, 93, 0.31)",
      "sidebar_text": "rgba(40, 73, 93, 0.31)",
      "tab_loading": "rgb(35, 191, 77)"
    }
  }
}