Examine source code of PayPauls Dark Matter

{
  "theme": {
    "images": {
      "theme_frame": "DarkMatterPersona.jpg"
    },
    "colors": {
      "frame": "#073cdb",
      "tab_background_text": "#b3fcf7"
    }
  },
  "version": "2.0",
  "name": "PayPauls Dark Matter",
  "manifest_version": 2,
  "description": "Scientists have said that Dark Matter surrounds the Milky Way. Maybe space Butterflies as well."
}