Examine source code of deep space fantasy forest

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "deep space fantasy forest",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(203, 206, 97, 0)",
      "toolbar_text": "rgb(247, 240, 7)",
      "frame": "rgb(14, 42, 240)",
      "tab_background_text": "rgb(255, 215, 9)",
      "toolbar_field": "rgba(20, 27, 28, 0.52)",
      "toolbar_field_text": "rgb(242, 240, 244)",
      "tab_line": "rgb(252, 218, 0)",
      "popup": "rgb(43, 111, 32)",
      "popup_text": "rgb(187, 237, 6)",
      "tab_loading": "rgb(252, 218, 0)"
    }
  }
}