The problem with that mod is that, If Its made with the clouds, it will repeat that same image of Jupiter in the background a thousand times. That moon will look like a gear-wheel with hundreds of small Jupiters around her surface....
I don't think that can be made with the atmo, So Its probably the clouds...
Also, in 1.5 we will have perspective effects, Stef made a picture of Io with Jup on the background, So we just have to wait a little more.