Restored some default for backwards compatibility

The merge from 18f3fe363860d9fd737d9f0badc632afdb21ef5b changed some defaults. To preserve backwards compatibility with previous version, the original colors have been restored in QTouchposeApplication and the sample app.
Updates source to use modern Objective-C idioms

The source now relies features in modern Objective-C: auto-synthesis of properties and not needing to forward declare methods in a class.