Examine source code of Dev IDE Dark

{
  "manifest_version" : 2 ,
  "version" : "1.0",
  "name" : "Dev IDE",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-026-829b05416f823e170310e7c826ad1bec.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(33, 33, 33)",
      "toolbar_text": "rgb(241, 236, 44)",
      "frame": "rgb(22, 22, 22)",
      "tab_background_text": "rgb(202, 49, 28)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(18, 255, 57)",
      "tab_line": "rgb(0, 20, 255)",
      "popup": "rgb(31, 28, 28)",
      "popup_text": "rgb(116, 122, 241)",
      "tab_loading": "rgb(0, 20, 255)"
    }
  }
}