The left-handed axes are not left-handed.
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
In /Widgets/Testing/Cxx/TestOrientationMarkerWidget.cxx line 510. This should be: transform->RotateY(180);
You need a reflection along one of the axes in order to change the handedness. A rotation of 90 will not do it but a rotation of 180 will.
You could also use transform->Scale(1,1,-1) but the colours will be all black. It seems that orientation of the normals is changed if this is done. (I think.)