Examine source code of simpleTree

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "simpleTree",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-013-06591d4ad28ab7b9ee90f62f81d6b505.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(61, 142, 61)",
      "toolbar_field": "rgba(25, 47, 25, 0.7)",
      "toolbar_field_text": "rgb(248, 255, 248)",
      "tab_line": "rgb(245, 75, 41)",
      "popup": "rgb(109, 197, 109)",
      "popup_text": "rgb(19, 20, 18)",
      "tab_loading": "rgb(245, 75, 41)",
      "bookmark_text": "rgb(84, 16, 9)",
      "frame": "rgb(99, 44, 32)",
      "tab_background_text": "rgb(12, 240, 12)"
    }
  }
}