Examine source code of Back Yard Sun Set

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Back Yard Sun St",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(21, 50, 67, 0)",
      "toolbar_field": "rgba(164, 114, 56, 0.21)",
      "toolbar_field_text": "rgb(3, 3, 50)",
      "tab_line": "rgb(10, 10, 89)",
      "popup": "rgb(18, 84, 129)",
      "popup_text": "rgb(14, 3, 103)",
      "tab_loading": "rgb(10, 10, 89)",
      "bookmark_text": "rgb(101, 94, 22)",
      "frame": "rgb(58, 46, 105)",
      "tab_background_text": "rgb(97, 25, 5)"
    }
  }
}