Examine source code of semi dark magenta

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "dark mfc",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(233, 237, 240)",
      "toolbar_text": "rgb(30, 30, 30)",
      "frame": "rgb(52, 52, 52)",
      "tab_background_text": "rgb(238, 238, 238)",
      "toolbar_field": "rgb(252, 252, 252)",
      "toolbar_field_text": "rgb(14, 14, 14)",
      "tab_line": "rgb(255, 0, 193)",
      "popup": "rgb(225, 225, 225)",
      "popup_text": "rgb(45, 45, 45)",
      "tab_loading": "rgb(255, 0, 193)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3645f6d9-3242-4471-bcb3-2d17d0175ae0}"
    }
  }
}