Examine source code of Welte Dark

{
  "manifest_version": 2,
  "version": "2.3.1",
  "name": "Welte Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(50, 50, 52, 0.5)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(163, 163, 163)",
      "tab_background_text": "rgb(0, 46, 86)",
      "toolbar_field": "rgba(75, 75, 77, 0.5)",
      "toolbar_field_text": "rgb(223, 223, 223)",
      "tab_line": "rgb(253, 185, 19)",
      "popup": "rgb(105,105,110)",
      "popup_text": "rgb(255,255,255)",
      "tab_loading": "rgb(253, 185, 19)",
      "ntp_background": "rgb(42,42,46)",
      "ntp_text": "rgb(255,255,255)",
      "icons": "rgb(227,227,227)",
      "sidebar": "rgb(56,56,61)",
      "sidebar_border": "rgb(38,38,41)",
      "sidebar_text": "rgb(255,255,255)",
      "toolbar_top_separator": "rgb(253,185,19)"
    }
  }
}