Examine source code of Dragonball Original

{
  "theme": {
    "images": {
      "theme_frame": "BrowserHeaderDragonball.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Dragonball Original",
  "manifest_version": 2,
  "description": "I created this persona with a blue and white gradient background. I then put the dragonball logo on top of it.\n\nThe reason for the blue and white is this what you see Goku wearing for the first time in the series."
}