Purple Response and Child of Prague?

Does anyone know what the “purple response” is? I believe it has something do with the Child of Prague.

God Bless,
Michael

Hope this helps.
members.chello.nl/~l.de.bondt/NovenaInfantJesusPrague.htm

How nice to see this. The Infant of Prague is special to me, and so is this Novena.
My great grandparents were from Prague.
God Bless

DISCLAIMER: The views and opinions expressed in these forums do not necessarily reflect those of Catholic Answers. For official apologetics resources please visit www.catholic.com.