Examine source code of Echo my Bello

{
  "theme": {
    "images": {
      "theme_frame": "Top.png"
    },
    "colors": {
      "frame": "#00b003",
      "tab_background_text": "#0037ad"
    }
  },
  "version": "2.0",
  "name": "Echo my Bello",
  "manifest_version": 2,
  "description": "my first: for my bird Echo"
}