Examine source code of wo wichtig war

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "FI",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg",
        "images/2.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center bottom",
        "left center",
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-y",
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0.15)",
      "toolbar_text": "rgb(124, 173, 218)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(123, 207, 216)",
      "toolbar_field": "rgba(40, 73, 93, 0.57)",
      "toolbar_field_text": "rgb(29, 37, 138)",
      "tab_line": "rgb(35, 191, 77)",
      "popup": "rgba(45, 231, 168, 0.4)",
      "popup_text": "rgb(98, 102, 183)",
      "ntp_background": "rgb(84, 55, 232)",
      "ntp_text": "rgb(154, 123, 216)",
      "popup_border": "rgb(35, 191, 77)",
      "tab_loading": "rgb(35, 191, 77)"
    }
  }
}