Examine source code of Sky and nature

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nature color",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(146, 255, 116)",
      "toolbar_text": "rgb(26, 88, 73)",
      "frame": "rgb(90, 177, 255)",
      "tab_background_text": "rgb(114, 229, 255)",
      "toolbar_field": "rgb(25, 121, 124)",
      "toolbar_field_text": "rgb(121, 234, 255)",
      "tab_line": "rgb(227, 255, 241)",
      "popup": "rgb(0, 78, 137)",
      "popup_text": "rgb(173, 244, 255)",
      "tab_loading": "rgb(227, 255, 241)"
    }
  }
}