Examine source code of ztk

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ztk",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-020-48c286b34e53380d46803c2e5603a5b2.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(40, 42, 54)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(40, 42, 54)",
      "toolbar_field_text": "rgb(139, 233, 253)",
      "tab_line": "rgb(98, 114, 164)",
      "popup": "rgb(40, 42, 54)",
      "popup_text": "rgb(215, 226, 239)",
      "popup_border": "rgb(189, 147, 249)",
      "popup_highlight": "rgb(98, 114, 164)",
      "toolbar_field_border_focus": "rgb(189, 147, 249)",
      "toolbar_field_text_focus": "rgb(215, 226, 239)",
      "tab_loading": "rgb(98, 114, 164)"
    }
  }
}