Examine source code of Mysterious Lights

{
  "name": "Mysterious Lights",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "LightfromAboveH.jpg"
    },
    "colors": {
      "frame": "rgba(230, 78, 43, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(232, 84, 44, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(173, 48, 14, 0.07)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(244, 252, 5, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7f338458-8695-485e-afc4-f3f29fa4efa7}"
    }
  }
}