Examine source code of Simply Espeon

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#663366"
    }
  },
  "version": "2.0",
  "name": "Simply Espeon",
  "manifest_version": 2,
  "description": "A persona of the psychic-type Pokemon Espeon! It evolves from an Eevee that trusts its trainer and is leveled up during the day."
}