Examine source code of Summer Mirage

{
  "theme": {
    "images": {
      "theme_frame": "summermirage.jpg"
    },
    "colors": {
      "frame": "#52e6fa",
      "tab_background_text": "#f74077"
    }
  },
  "version": "2.0",
  "name": "Summer Mirage",
  "manifest_version": 2,
  "description": "Visions of summer outside my seaside window on the world."
}