ok here is the only time I would even think about "pied markers"

I breed a het pied to something, I want to hold back some of the possible hets, some of the offspring have the different look to them, so I hold them back hoping their het pied

other than that, its useless to even look at a snake and think it has markers. there are possibly thousands of genes that cause how a snake looks, only a handful of het pieds even have "markers". the rest that have the look is just the combination of the other thousands of possible genes.