Examine source code of Simple Firefox

{
  "theme": {
    "images": {
      "theme_frame": "header1.png"
    },
    "colors": {
      "frame": "#faf5f5",
      "tab_background_text": "#ebe6e6"
    }
  },
  "version": "2.0",
  "name": "Simple Firefox",
  "manifest_version": 2,
  "description": "Just a persona I made out of boredom..."
}