Fixed osglogo demo so that is correctly set up the colour of the background.
Fixed osglogo demo so that is correctly set up the colour of the background.


artoolkit/osg,omega-hub/osg,koshman86/osg,ghub/osg,ntoand/osg,XiaoCC/osg,ntoand/osg,ghub/osg,stmh/osg,artoolkit/osg,XiaoCC/osg,stmh/osg,XiaoCC/osg,koshman86/osg,omega-hub/osg,XiaoCC/osg,ghub/osg,ntoand/osg,artoolkit/osg,koshman86/osg,XiaoCC/osg,stmh/osg,ghub/osg,omega-hub/osg,artoolkit/osg,ntoand/osg,omega-hub/osg,koshman86/osg,stmh/osg,stmh/osg