Super Mario World Retro

Old school Super Mario Bros. backgrounds (including the dungeon at the bottom) darkened so it doesn't distract too much.

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manifest.json

{
  "theme": {
    "images": {
      "theme_frame": "supermariobros-header.jpg"
    },
    "colors": {
      "frame": "#2e497e",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Super Mario World Retro",
  "manifest_version": 2,
  "description": "Old school Super Mario Bros. backgrounds (including the dungeon at the bottom) darkened so it doesn't distract too much."
}