Examine source code of pink stars moving

{
  "theme": {
    "images": {
      "theme_frame": "rere.JPG"
    },
    "colors": {
      "frame": "#e854de",
      "tab_background_text": "#e833c1"
    }
  },
  "version": "2.0",
  "name": "pink stars moving",
  "manifest_version": 2,
  "description": "it is a nice picture"
}