Examine source code of Gothic Leather

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gothic Leather",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(136, 125, 142, 0.83)",
      "toolbar_text": "rgb(238, 240, 244)",
      "frame": "rgb(89, 75, 97)",
      "tab_background_text": "rgb(208, 203, 233)",
      "toolbar_field": "rgb(193, 181, 202)",
      "toolbar_field_text": "rgb(3, 3, 3)",
      "tab_line": "rgb(154, 69, 226)",
      "popup": "rgb(139, 131, 145)",
      "popup_text": "rgb(214, 195, 233)",
      "tab_loading": "rgb(154, 69, 226)"
    }
  }
}