Examine source code of NASA Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "NASA Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(93, 127, 185, 0.61)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 61, 146)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(27, 27, 27)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(64, 93, 133)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  }
}