Examine source code of Deep Sea Nami

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#fffff5",
      "tab_background_text": "#006aff"
    }
  },
  "version": "2.0",
  "name": "Deep Sea Nami",
  "manifest_version": 2,
  "description": "Nami is a champion in League of Legends. She has multiple skins that you can add to her in the game. Deep Sea Nami is one of them. She is very pretty and looks very mysterious. Which was why I was shocked to not see a theme alright on her. This is why I made this to honor my main in League of Legends."
}