Examine source code of Katy Firework

{
  "theme": {
    "images": {
      "theme_frame": "firework2.PNG"
    },
    "colors": {
      "frame": "#c92675",
      "tab_background_text": "#801c9c"
    }
  },
  "version": "2.0",
  "name": "Katy Firework",
  "manifest_version": 2,
  "description": "firework, celebrity, 4th of July, independence day, fireworks, Katy Perry, celebrities, singer, California girl, girly"
}