Only a short note, the pictured reflector is a Firefly reflector.
There are the followed reflectors available:
From l. to r. : "Violet me", Double Beryl, Pumpkin Spice, Blue Moon, Firefly
"Violet me" is a one of a kind reflector. Only double beryl was done in two runs means 40 pieces are existing. All other reflectors only 20 are existing.
There is also a first green reflector done by Hogo without a cool name:
Thanks for the additions! I would take any if possible. As far as I remember, the double beryl was coated with the same material that covers the inside of the integrating spheres?
I do not think that this spheres are coated with GITD stuff. I think it is some kind of white matte color to ensure the light will be reflected into all directions.
The original HDS white diffuse reflectors are also a little bite more diffuse than the HDS GITD reflectors. The only exception is the Firefly since the surface structure ensures a extreme diffuse reflection.
But anyway the white diffuse and the GITD reflectors done by HDS are all not easy to find.
Maybe when I have time I will make my own white diffuse reflector. I would have everything (airbrush, white color, ...), but as always lack of time.