Examine source code of Two little angels

{
  "theme": {
    "images": {
      "theme_frame": "littleangelsh.jpg"
    },
    "colors": {
      "frame": "#168bb5",
      "tab_background_text": "#16084a"
    }
  },
  "version": "2.0",
  "name": "Two little angels",
  "manifest_version": 2,
  "description": "Two little angels."
}