[Phantomcrow]

By purple I am guessing you mean Blue on Apoc?? The early production run ALL had Blue BAF parts , both regular and variants. The arms, legs, and torso sides all had blue on dark blue colors. About halfway during production they changed the blue on the arms, legs, and torso to full black. This included the variants as well. So if I remember correctly there are a blue and black BAF versions of every figure in the line and their variants. I know on a general basis that the Black ML Apocalypse BAF is harder to complete and goes for more since most stores only got early production waves and then moved on to the next series.