Examine source code of blue_tabs

{
  "theme": {
    "images": {
      "theme_frame": "js_ff.png"
    },
    "colors": {
      "frame": "#f2d9d9",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "blue_tabs",
  "manifest_version": 2,
  "description": "Blue_tabs them to go with XP"
}