Examine source code of Dark Leafe

{
  "theme": {
    "images": {
      "theme_frame": "Fresh__series_6_by_chyidean.jpg"
    },
    "colors": {
      "frame": "#a3c972",
      "tab_background_text": "#f5f5f5"
    }
  },
  "version": "2.0",
  "name": "Dark Leafe",
  "manifest_version": 2,
  "description": "dark green"
}