Examine source code of Arcade Heaven

{
  "theme": {
    "images": {
      "theme_frame": "arcade_persona5.jpg"
    },
    "colors": {
      "frame": "#a3a0a0",
      "tab_background_text": "#6e326a"
    }
  },
  "version": "2.0",
  "name": "Arcade Heaven",
  "manifest_version": 2,
  "description": "Persona with some old arcade characters."
}