Examine source code of Orange slug

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mr. Orange",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(104, 28, 28)",
      "toolbar_text": "rgb(184, 200, 241)",
      "frame": "rgb(203, 73, 50)",
      "tab_background_text": "rgb(249, 253, 253)",
      "toolbar_field": "rgb(5, 52, 109)",
      "toolbar_field_text": "rgb(230, 249, 249)",
      "tab_line": "rgb(21, 17, 1)",
      "popup": "rgb(76, 99, 139)",
      "popup_text": "rgb(1, 2, 3)",
      "tab_loading": "rgb(39, 39, 188)"
    }
  }
}