Examine source code of Macro sand

{
  "theme": {
    "images": {
      "theme_frame": "Sandcloseup.jpg"
    },
    "colors": {
      "frame": "#f0a165",
      "tab_background_text": "#fffcfc"
    }
  },
  "version": "2.0",
  "name": "Macro sand",
  "manifest_version": 2,
  "description": "macro photo of sand"
}