Examine source code of Egyptian Vector Art

{
  "manifest_version": 2,
  "version": "3.0",
  "name": "Egyptian Vector Art",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(201, 142, 64, 0.13)",
      "toolbar_field": "rgba(254, 254, 254, 0)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(197, 0, 47)",
      "popup": "rgb(217, 177, 126)",
      "popup_text": "rgb(73, 0, 17)",
      "tab_loading": "rgb(197, 0, 47)",
      "bookmark_text": "rgb(82, 0, 20)",
      "frame": "rgb(217, 177, 126)",
      "tab_background_text": "rgb(0, 0, 0)"
    }
  }
}