Examine source code of Balto2000

{
  "name": "Balto2000",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "1240317_1413396545554170_1108534294_n.jpg"
    },
    "colors": {
      "frame": "rgba(3, 3, 3, 1)",
      "tab_background_text": "rgba(151, 18, 161, 1)",
      "toolbar": "rgba(8, 8, 8, 1)",
      "bookmark_text": "rgba(196, 19, 172, 1)",
      "toolbar_field": "rgba(8, 8, 8, 1)",
      "toolbar_field_text": "rgba(186, 11, 177, 1)"
    }
  }
}