Examine source code of Purple gradient (dark)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple gradient",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(61, 61, 61, 0.4)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(93, 31, 165)",
      "tab_background_text": "rgb(226, 152, 254)",
      "toolbar_field": "rgba(101, 98, 98, 0.52)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(186, 78, 241)",
      "popup": "rgb(126, 40, 175)",
      "popup_text": "rgb(248, 248, 253)",
      "popup_border": "rgb(211, 164, 246)",
      "tab_selected": "rgba(170, 7, 251, 0.4)",
      "toolbar_bottom_separator": "rgba(254, 246, 246, 0.52)",
      "toolbar_field_border_focus": "rgb(183, 76, 249)",
      "toolbar_field_highlight": "rgb(148, 30, 193)",
      "tab_loading": "rgb(186, 78, 241)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1b3efe8d-16f1-4fd3-ac46-846bbae94e23}"
    }
  }
}