Examine source code of Red and Blue Space

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Red and Blue Space",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(1, 1, 116, 0.34)",
      "toolbar_text": "rgb(224, 224, 237)",
      "frame": "rgb(3, 22, 33)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(7, 7, 109, 0.41)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(1, 1, 116)",
      "popup": "rgb(18, 21, 90)",
      "popup_text": "rgb(157, 157, 185)",
      "tab_loading": "rgb(1, 1, 116)"
    }
  }
}