Both my Irminias looks like this, although my bigger one is a bit brighter than the other, with a little deeper orange and black.. but both are pure.. they're both pre-mature and I suspect the bigger one is male.. sooo yeah.. I have a possible Irminia/cambridgei hybrid.. she's a very dark grey with an olive drab sheen on the carapace and femurs.. the chevrons on the abdomen are like those of P. Cambridgei but is also a deep yellowish and dark grey (where in pure cambridgei these seem to fade more together).. the markings on the feet are deep orange.. I also think the size of the abdomen plays a role in how bright the markings seems.. I have noticed when my Irminias are fat the markings on the abdomen seems faded..
I don't understand why people do this, it's plain stupidity reallyirminia should have bright orange lightening bolts on the legs. I recently saw where some one was bragging on crossing irminia X cambridgei, wonder if you wound up with some of those frankenspiders?