Examine source code of Purple Ocean Sunset

{
  "theme": {
    "images": {
      "theme_frame": "purple_sunset-header.jpg"
    },
    "colors": {
      "frame": "#f7f7f7",
      "tab_background_text": "#080808"
    }
  },
  "version": "2.0",
  "name": "Purple Ocean Sunset",
  "manifest_version": 2,
  "description": "Purple sunset header image"
}