Examine source code of Maroon Night

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Maroon Night",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(42, 26, 35)",
      "toolbar_text": "rgb(255, 250, 250)",
      "frame": "rgb(18, 12, 16)",
      "tab_background_text": "rgb(84, 84, 84)",
      "toolbar_field": "rgb(18, 12, 16)",
      "toolbar_field_text": "rgb(255, 250, 250)",
      "tab_line": "rgb(50, 45, 48)",
      "popup": "rgb(85, 62, 77)",
      "popup_text": "rgb(255, 250, 250)",
      "tab_loading": "rgb(50, 45, 48)"
    }
  }
}