ColorDefinition[] allDefs = registry.getColors();
SortedSet set = new TreeSet(IThemeRegistry.ID_COMPARATOR);
set.addAll(Arrays.asList(allDefs));
set.removeAll(Arrays.asList(definitions));
return (ColorDefinition[]) set.toArray(new ColorDefinition[set.size()]);
}
/**
* Return the definitions that should have their default preference value
* set but nothing else.