Examine source code of pretty1

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "pretty1",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(61, 61, 61)",
      "toolbar_text": "rgb(209, 212, 140)",
      "frame": "rgb(24, 26, 26)",
      "tab_background_text": "rgb(24, 226, 226)",
      "toolbar_field": "rgb(44, 47, 46)",
      "toolbar_field_text": "rgb(6, 250, 177)",
      "tab_line": "rgb(112, 211, 248)",
      "popup": "rgb(54, 56, 55)",
      "popup_text": "rgb(16, 196, 241)",
      "tab_loading": "rgb(112, 211, 248)"
    }
  }
}