Examine source code of Purple Dark Clean

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Purple Dark Clean - Advanced",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(49, 42, 57)",
      "toolbar_text": "rgb(198, 179, 255)",
      "frame": "rgb(23, 21, 24)",
      "tab_background_text": "rgb(135, 130, 158)",
      "toolbar_field": "rgb(40, 35, 42)",
      "toolbar_field_text": "rgb(198, 179, 255)",
      "tab_line": "rgba(198, 179, 255, 0)",
      "popup": "rgb(49, 42, 57)",
      "popup_text": "rgb(255, 255, 255)",
      "icons_attention": "rgb(198, 179, 255)",
      "popup_border": "rgba(172, 120, 252, 0)",
      "popup_highlight": "rgb(172, 120, 252)",
      "sidebar_highlight": "rgb(84, 78, 91)",
      "tab_loading": "rgb(172, 120, 252)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(172, 120, 252)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ab789e6a-3c00-4936-acd4-dec67559eaec}"
    }
  }
}