Examine source code of Schliemman

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Schliemman",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg",
        "images/2.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom",
        "right top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat",
        "repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(37, 13, 21)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(13, 13, 13)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(45, 11, 26)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(205, 35, 185)",
      "popup": "rgb(43, 16, 22)",
      "popup_text": "rgb(215, 226, 239)",
      "sidebar_highlight": "rgb(53, 55, 167)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(27, 5, 12)",
      "tab_loading": "rgb(205, 35, 185)"
    }
  }
}