Improves themes listing from examples' shell.
Improves themes listing from examples' shell.

Now translates the 'Default' theme to 'Blue', as previously used.
Default now is 'Triton', and the 'Defalut' should be renamed to 'Blue'.

But this is not a good idea to be done between minor versions.

extnet/Ext.NET.Examples,extnet/Ext.NET.Examples,extnet/Ext.NET.Examples