I know the pics you're referring to, and while the light washes a lot of it out, if you think there's just some purplish/bloack on a segment of the front legs, you need to check your monitor. I've also seen adult shots taken in more favorable light and they are anything but faded: Blue all up and down much of the legs with yellow striping, and the abdomens a mixture of blues, blacks, and greys.
This is offtopic to the thread, but here I agree on all points. Tesmoignt is just a jacka** interested in seeing how many species he can spam into the literature. If all of us live long enough and stay in the hobby, I'd say it's a fair bet that 60% or more of the "species" he's discovered will be synonymized with better known and defined species. But, from his p.o.v., that still means his name will be forever linked to dozens of species he actually did describe by brute force and ignorance no matter what an irresponsible crackpot he was.
I think it comes down to research on what you're actually getting (and this goes for any species), and if the pricetag for P. metallica doesn't motivate someone to do the necessary research as to what they're actually getting, they deserve any disappointment.
Don't start comparing apples and oranges here... yer comparing two completely different things. Sure, they're both Ts and all that, but as a hobbyist, these things are anything but comparable - aside from the 8-legged factor.
Aint that the truth, Gunter Schmidt is the president of that club. There are a bunch of (dare I say it) Europeans who could become honary members of that club. Of all the T's described recently, most are covered by Europeans, of all those, maybe 5% are correct.
=D