Examine source code of Butterfly Stroke

{
  "theme": {
    "images": {
      "theme_frame": "SwimmingPersonaHeader.jpg"
    },
    "colors": {
      "frame": "#18649e",
      "tab_background_text": "#1125d9"
    }
  },
  "version": "2.0",
  "name": "Butterfly Stroke",
  "manifest_version": 2,
  "description": "Water patterns of a swimmer doing the butterfly stroke."
}