they are beautiful Champ. Google image them. Most will be from the UK on an image search. I have been breeding towards theme here too for a while, but some nice imports will be better.
and no sumatras are not a fibro melanistic breed ( black skinned)
yes fibro skin is a DQ in them, in any country
Gypsy ( black / purple) face is not indications of a fibro melanistic bird.
A sumatra is supposed to have yellow skin, black face and comb and black legs with the sole of the foot being yellow as well.
There is a diluter or something with the blue that tends to lighten up the face and combs alot. You virtually never see a true dark face on blues, and even less on splash. It happens, I have some in hens, but it's very rare. They are still smutty looking dark red, just no where near as dark as the blacks are. Same seems to hold true on whites, though I believe the major problem in the US whites is they are very mixed and just not refined enough. I dont think the recessive white gene should dilute face pigments like the blue gene does. Case in point would be the over seas stock.
Another thing I have noticed on the faces is sun exposer. Fully sheltered birds faces dont tend to get as dark as ones who have out in the open access . These are just some personal observations in my own birds. But over the past years of working with them, I have noticed birds in the sun get darker faced than ones that stay sheltered from it. Sun tan maybe?