I followed this post to install Opera 20 using Wine in Zenwalk Linux

https://forums.opera.com/topic/1207/how-to-install-and-run-the-opera-20-for-windows-under-linux-box-using-the-wine-app

It's a shame we cannot change the Gui. This produces a very annoying contrast to the view in my system.

The Blue aspect theme from Old Windows is Sux pls Opera Team fix it. think a little in Linux users