Examine source code of Hot summer

{
  "theme": {
    "images": {
      "theme_frame": "preview_largew56copy.jpg"
    },
    "colors": {
      "frame": "#731100",
      "tab_background_text": "#ab0000"
    }
  },
  "version": "2.0",
  "name": "Hot summer",
  "manifest_version": 2,
  "description": "A beautiful design with dark flowers, kinda romantic. :)"
}