Examine source code of Leather & Slate

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Leather & Slate",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-006-51ab495c5f5dde6a3cddb22484acd00d.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(27, 40, 45)",
      "toolbar_text": "rgb(213, 212, 210)",
      "frame": "rgb(44, 27, 8)",
      "tab_background_text": "rgb(126, 125, 124)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(249, 254, 250)",
      "tab_line": "rgb(239, 204, 16)",
      "popup": "rgb(27, 40, 45)",
      "popup_text": "rgb(192, 192, 190)",
      "icons": "rgb(202, 160, 2)",
      "tab_loading": "rgb(239, 204, 16)"
    }
  }
}