Beyond that, I've never personally seen a jet black or solid blue/purple beardie. Most of the darker colors containing more melanin are less popular, as the selective preference seems to be for less black and more reds, oranges, and yellows. White beardies are out there, too, but not so much in the way of black ones. There's a handful of pics out there of babies, and dark wild types, but nothing really black-black.
The only thing Rare that I would consider, are the Picture's of a Beardie that had White Blotches on it's face and beard and Leg's, and the white was not from shed, it was just like that, and I mean a Bright Orange/Red with Solid White blotches.
And Albino's are Rare as well, but they can't be raised to Adult's, or at least no one has found a way to yet, as Albinos are very sensitive to light, but Bearded Dragon's Need a lot of Bright Light and UVB Light. So there's the problem.
Albino reptiles,dogs,snakes etc are in fact deformed. They lack vison and susceptible to cancers etc. they lack certain chromosomes. Albino beardies have a especially low mortality rate. :roll: