Examine source code of Space Planet

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Space Planet",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(39, 25, 151)",
      "toolbar_text": "rgb(191, 143, 255)",
      "frame": "rgb(42, 109, 167)",
      "tab_background_text": "rgb(3, 255, 255)",
      "toolbar_field": "rgb(47, 151, 242)",
      "toolbar_field_text": "rgb(150, 213, 223)",
      "tab_line": "rgb(67, 194, 218)",
      "popup": "rgb(190, 129, 228)",
      "popup_text": "rgb(76, 108, 227)",
      "button_background_active": "rgb(169, 0, 251)",
      "button_background_hover": "rgb(173, 115, 242)",
      "icons": "rgb(55, 229, 235)",
      "tab_loading": "rgb(67, 194, 218)"
    }
  }
}