Examine source code of Eddsworld Stripes

{
  "theme": {
    "images": {
      "theme_frame": "preview_large.jpg"
    },
    "colors": {
      "frame": "#beffb5",
      "tab_background_text": "#00ff4d"
    }
  },
  "version": "2.0",
  "name": "Eddsworld Stripes",
  "manifest_version": 2,
  "description": "my first one. don't know how all this works yet."
}