Ah, well...

Receiving files is really a delicate process on the IT, and I think it requires sobexsvr? Eh, I don't know why it has that background, it is transparent... hm...

Oh, well, that is an old pic. That is not a custom theme, that is the maemo vista theme https://garage.maemo.org/projects/vista-n800/

But, the default theme looks a lot cooler with those icons.