Examine source code of Firefox-ko School Daze

{
  "theme": {
    "images": {
      "theme_frame": "bg.jpg"
    },
    "colors": {
      "frame": "#ffb554",
      "tab_background_text": "#5b4fff"
    }
  },
  "version": "2.0",
  "name": "Firefox-ko School Daze",
  "manifest_version": 2,
  "description": "The Browser-tan Firefox-ko in a high school uniform."
}