Fire VS. Cayenne Fire
Poppy (Marsha Matthews) came up with the name Cayenne to distinguish Fires possessing the additional mutation, Red Mask (aka: Red Factor) from regular Amel Bloodreds (Fires). RM is dominant to wild-type, so you can see more red in visual hets (Fires that have only one chromosal copy of the RM mutation) than regular Fires not possessing the gene, but the super-form (Homozygotes) are spectacular. Those are the Fires that possess both copies of the RM gene mutation. They are sometimes called Super Cayenne Fires. The most distinguished examples from our two lines are the SMR Red Mask line and the South African line.
The RM gene (actually discovered by Poppy in my Sunglow Motleys) was in that line since I began producing them back in the mid 1990s, but I didn't recognize it. I just knew that my Sun Motleys were more intensely colored than most Amel Motleys, but didn't know why. It took years before Poppy told me that the reason some are shockingly colored (Super-forms) were even better than most of mine was that they inherited both copies of the dominantly-inherited RM mutation. But the best demonstration of it is in my SMR Fires, that were always redder than anyone else's. I didn't know why until breeding trials revealed that RM was the reason.
Here is an example of a Classic Sun Motley (Visual Het) with a Super Sun Motley, lower-most in the pic. I'll dig up a pic that demonstrates the color distinction between Fire and Cayenne Fire.