Examine source code of Just simple (light)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Just simple (light)",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(239, 242, 245)",
      "toolbar_text": "rgb(4, 4, 4)",
      "frame": "rgb(240, 243, 245)",
      "tab_background_text": "rgb(6, 6, 6)",
      "toolbar_field": "rgb(235, 238, 240)",
      "toolbar_field_text": "rgb(6, 6, 6)",
      "tab_line": "rgba(70, 74, 77, 0)",
      "popup": "rgb(250, 253, 255)",
      "popup_text": "rgb(7, 7, 7)",
      "sidebar_text": "rgb(0, 6, 8)",
      "sidebar": "rgb(255, 255, 255)",
      "tab_background_separator": "rgb(16, 17, 17)",
      "tab_loading": "rgb(11, 11, 11)",
      "tab_text": "rgb(7, 7, 7)",
      "toolbar_vertical_separator": "rgba(0, 13, 13, 0.19)"
    }
  }
}