Examine source code of Ribbon will flow..

{
  "theme": {
    "images": {
      "theme_frame": "a625-ribon--darksorari--------------j-sy.jpg"
    },
    "colors": {
      "frame": "#eef2dc",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Ribbon will flow..",
  "manifest_version": 2,
  "description": "リボンが流れます。\nRibbon will flow."
}