How about a luxurious one? I think it is definitely very comfortable and good looking. 
You can choose a black one to match the original colour scheme of your Strida.
Brooks Flyer Special Saddle
http://www.strida.hk/images/acc/CREAM2.jpg
http://www.strida.hk/images/acc/CREAM4.jpg
Do not buy a Brooks B17 Saddle because it cannot fit onto your Strida’s seat mounting.
[url]Replacing your seat? - #4 by Amuro_Lee]