Examine source code of red for marel

{
  "theme": {
    "images": {
      "theme_frame": "X-KH-gimplogofirefox.3.1.jpg"
    },
    "colors": {
      "frame": "#ff9c9c",
      "tab_background_text": "#360000"
    }
  },
  "version": "2.0",
  "name": "red for marel",
  "manifest_version": 2,
  "description": "red ..red ... made with gimp .."
}