I know how it feels, not wanting to leave a religion you've grown up with, and trying to incorporate it to another. A holy witch, I've never heard of, and I have heard of christian wicca, but not catholic wicca. Try looking into these catagories, as they bring together catholic practices with magickal and/or pagan practices:
Hermeticism (I think)
Many places practice magic, while following a religion that bans it (I see many people do it in Mexico), but it's natural for us humans to meld different things to solve our needs. I am personally experienced in some folk catholic magick and beliefs, so if you have questions on this type of stuff, let me know. May you find what you seek.
Despite the clams of people on this website, actual Wicca and christianity cannot mix- the core beliefs are incompatible.
But, some people have labelled, erroneously, what they practice as Wicca.
My opinion is, why label what you want to do?
Just practice what you wish to practice, you can pick up a basic book on magick, which is not necessarily a part of witchcraft, and adapt it to your own personal needs.
Witchcraft is the study of nature and natural processes. If you want the magick brand, you just take the deities name in any text book or spell you wish to practice and you use Jesus, lord, whatever. It matters not.
In my line of practice I use the Jewish god-names all the time, I am not Jewish, nor do I worship that God. I am merely calling on the principles he represents and attuning my mind to those principles.
Jesus is a solar deity, there are loads of catholic saints which can, and often are, used as substitutes for pagan gods and goddesses.