Yes, I was brought up a Catholic with the concept of The Holy Trinity aka God the Father, God the Son and God the Holy Ghost, so it's no surprise (is it really?) that oftentimes I paint these Introversions and Dichotomies in threes.
In these latest ones I also used three colours per work, well 2.5 Matchpots so God the Half Ghost if we're adhering to indoctrinated conditions... and they're titled, too.
Rh+
Rh-
O