Examine source code of Forest Falls Rainbow

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#011c06",
      "tab_background_text": "#f5f5f5"
    }
  },
  "version": "2.0",
  "name": "Forest Falls Rainbow",
  "manifest_version": 2,
  "description": "A dark lush green forest water fall gives off a rainbow that no one is around to see."
}