Examine source code of NelsonAlexander

{
  "theme": {
    "images": {
      "theme_frame": "firefoxalexander.jpg"
    },
    "colors": {
      "frame": "#2a6ef7",
      "tab_background_text": "#fffcfc"
    }
  },
  "version": "2.0",
  "name": "NelsonAlexander",
  "manifest_version": 2,
  "description": "Made for me by me"
}