Examine source code of Just Dont Panic

{
  "theme": {
    "images": {
      "theme_frame": "DONTPANIC.PNG"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#bf0404"
    }
  },
  "version": "2.0",
  "name": "Just Dont Panic",
  "manifest_version": 2,
  "description": "The single most logical phrase in the entire galaxy. \n\nCoined by Douglas Adams, it is found in large friendly letters on the front of The Hitchhikers Guide to the Galaxy, and is now available on your browser  to help improve the quality of your internet browsing. "
}