Examine source code of Spiky Pompom

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pompom",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg",
        "images/1.jpg",
        "images/2.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center",
        "center center",
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "no-repeat",
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(252, 123, 125, 0.49)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(247, 247, 247)",
      "tab_background_text": "rgb(251, 134, 148)",
      "toolbar_field": "rgb(255, 232, 235)",
      "toolbar_field_text": "rgb(203, 78, 96)",
      "tab_line": "rgb(229, 53, 55)",
      "popup": "rgb(241, 201, 206)",
      "popup_text": "rgb(189, 39, 96)",
      "tab_loading": "rgb(229, 53, 55)"
    }
  }
}