Examine source code of Early Evening Darker

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Early Evening V2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-018-0ca3dfc7bb661ec53999d358812ce0ab.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(47, 40, 47, 0.46)",
      "toolbar_text": "rgb(255, 227, 237)",
      "frame": "rgb(36, 29, 36)",
      "tab_background_text": "rgb(195, 174, 182)",
      "toolbar_field": "rgba(255, 227, 237, 0.96)",
      "toolbar_field_text": "rgb(81, 39, 50)",
      "tab_line": "rgb(254, 216, 230)",
      "popup": "rgb(55, 47, 55)",
      "popup_text": "rgb(255, 227, 237)",
      "tab_loading": "rgb(254, 216, 230)"
    }
  }
}