Examine source code of Pro Lightning

{
  "theme": {
    "images": {
      "theme_frame": "ProLightning-Top.jpg"
    },
    "colors": {
      "frame": "#b8b8b8",
      "tab_background_text": "#262626"
    }
  },
  "version": "2.0",
  "name": "Pro Lightning",
  "manifest_version": 2,
  "description": "A really slick lightning effect with a nice professional stripe overlay."
}