Examine source code of SEO Indonesia

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#c4c4c4",
      "tab_background_text": "#212121"
    }
  },
  "version": "2.0",
  "name": "SEO Indonesia",
  "manifest_version": 2,
  "description": "I make several profiles in my firefox for specific purpose on each. I think this design will make me always remember when I currently on my SEO profile or not."
}