There is zero reason to assume that a Marron breeding, using a strongly red influenced mate, will not produce babies that still fall into two distinct groups. My expectation is that they would just be that much more extreme. And why not!? I suppose enough breedings have not been done to say with 100% certainty what the results of any particular breeding might produce, and I look forward to myself and others showing us example of such breedings soon.
The notion that Morrons and or Super Marrons should not be bred to animals with strong red influence runs counter to every fiber of my being. I strive to make any Boa project I put my hands to better or more extreme in what I happen to personally like. Anyone who seeks to make the status quo of whatever is welcome to do that for sure. I can't wait to see a Pastel Dream Monster Tail Super Marron Key West! That is where I am heading. Come on little Key West girls!!! Grow! LOL
The bottom line is Marron everything is going to happen eventually. There is no evidence that for some reason, that some characteristics will be untouched or unaffected by the Marron mutation if this or that is used in breeding. That makes no sense. If in fact that was the case, then they fundamentally would not be a co-dominant trait would they? Of course they will.
Those characteristics are even more extreme in the Super Marrons. Ever notice how out of the average the Super Marron's patterns are?

A little bit reminiscent of Jungles and Aztecs at the same time. Great stuff on a bright sunny day in Minnesota!
-----
Jeff Ronne Sr
The Boaphile
Director USARK

Originator of Boaphile Plastics
The Boaphile Boa Site