Examine source code of My Blackboard

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "MyBlackboard",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(41, 55, 62)",
      "toolbar_text": "rgb(255, 158, 0)",
      "frame": "rgb(14, 85, 28)",
      "tab_background_text": "rgb(43, 215, 237)",
      "toolbar_field": "rgb(254, 255, 210)",
      "toolbar_field_text": "rgb(165, 0, 27)",
      "tab_line": "rgb(255, 228, 0)",
      "popup": "rgb(60, 68, 73)",
      "popup_text": "rgb(46, 219, 221)",
      "tab_loading": "rgb(255, 228, 0)"
    }
  }
}