Examine source code of Minimalistic design

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Minimalistic design",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-031-9570e8d1f7a5f835c92e764693337f43.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 255, 255)",
      "toolbar_text": "rgb(0, 196, 255)",
      "frame": "rgb(178, 242, 217)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(108, 80, 124)",
      "toolbar_field_text": "rgb(19, 231, 96)",
      "tab_line": "rgb(0, 255, 168)",
      "popup": "rgb(107, 227, 187)",
      "popup_text": "rgb(0, 0, 0)",
      "button_background_active": "rgb(255, 255, 255)",
      "tab_loading": "rgb(0, 255, 168)"
    }
  }
}