Examine source code of Space ground

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Space ground",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 186, 0)",
      "toolbar_text": "rgb(0, 13, 255)",
      "frame": "rgb(197, 36, 36)",
      "tab_background_text": "rgb(241, 203, 5)",
      "toolbar_field": "rgb(236, 70, 57)",
      "toolbar_field_text": "rgb(0, 62, 255)",
      "tab_line": "rgb(244, 13, 0)",
      "popup": "rgb(0, 193, 255)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(244, 13, 0)"
    }
  }
}