Examine source code of Fruit hamsters

{
  "theme": {
    "images": {
      "theme_frame": "Hamstar_Baby_by_Y_Ikeda.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#f0b235"
    }
  },
  "version": "2.0",
  "name": "Fruit hamsters",
  "manifest_version": 2,
  "description": "This isn't my work, credits to Y Ikeda, find the artist on Deviant art XD"
}