Yep, and people wonder why I say that the Catholic church is full of paganism. lol
Funny how in most instances a society's turn away from Christianity results in them having pagan impulses; acting like pagans, worshiping as pagans, thinking as pagans, murdering like pagans in ritualistic mass bloodletting, or embracing pagan symbolism.
The all-seeing eye within the triangle had a certain instructive purpose and wasn't only used by Catholics, Masons, etc. It was supposed to be instructive of God's triune nature and omniscience and used as a Christian symbol, albeit a creepy one across time and denominations. So yes, there is a pagan gloss, but the message communicated wasn't particularly insidious. Indeed, almost blunt in its status as a theological truth.
Now let's take a look at Mary in her relation to the symbol of the triune God. She is larger and dominates the center. The rays emanating from the rather alien God do not fall upon the parishioner gazing up at the mural. No, they go through Mary first. The mediatrix and redemptrix reigns, and the only way to get to her is through whichever power opens the way to her. That is the power of the very Church the onlooker is standing in...not unlike the Pagan temples and priests of old.