updated some of the mac pre-built apps.

.gitignore

@@ -17,6 +17,9 @@ extras/juce demo/build/win32_vc8/Release
 extras/the jucer/build/mac/build
 extras/audio plugin host/build/mac/build
 extras/binarybuilder/mac/build
+extras/prebuilt/Jucer.app
+extras/prebuilt/jucedemo.app
+extras/prebuilt/PluginHost.app
 bin/intermediate*
 bin/lib*
 bin/jucelib*

src/gui/components/controls/juce_ListBox.cpp

@@ -353,6 +353,7 @@ ListBox::ListBox (const String& name, ListBoxModel* const model_)
     addAndMakeVisible (viewport = new ListViewport (*this));
 
     setWantsKeyboardFocus (true);
+    colourChanged();
 }
 
 ListBox::~ListBox()