Working for 10 plus years helps to refine the offsprings appearance, for me the major goal has been to achieve a dark colouration on those necks that does not fade away or wash out in any way.

Orange Female

In fact my supers have black as opposed to deep purple and the tongues are also totally black unlike T positive morphs.

I've certainly noted that T pos specimens are much much more likely to have that purple fade to pale lavender or greenish tones.