I think I missed the beginning of this thread :)
So my question is what do you want to do ? :)

I tried your ImageSpecTest, and after a minor fix, it opens :)
But expect displaying an ImageMorph, it is not really usable :)

Ben

On 03 Nov 2013, at 21:37, Sergi Reyner <sergi.reyner@gmail.com> wrote:

2013/11/3 Sergi Reyner <sergi.reyner@gmail.com>

Something like this:

initializeWidgets
self
instantiateModels:
{ (#listModel -> #ListComposableModel).
(#pictureModel -> #AlphaImageModel).
} 

I gave it another try, and after a few attempts I managed to put together a working example of what I meant, in Pharo 3.0. I attach the .mcz file.

Cheers,
Sergi
<Raytests-SergiReyner.1.mcz>