Hi all.
 
I've added an issue with some tweaks/improvements to a few Polymorph classes.
 
http://code.google.com/p/pharo/issues/detail?id=4590
 
Groupboxes can now have dynamic content (model/getContentSelector based).
Abaility to create icon lists via builder/TEasilyThemed.
Expander labels now LabelMorphs rather than TextMorphs (can therefore appear as disabled)
IncrementalSliderMorphs now honour minWidth/minHeight in layouts
Panel morphs allow event based mouse over handling (call to super was missing).
Label groups allow for nil labels (equates to empty string)

Regards, Gary