Loetz Decorated Glass, Peche/WW/Hosch?

Another of Andy's posts. The yellow and the white pieces are from my own collection:

I always wonder why these designs with pulled amethyst glass are generally ignored, both by collectors and the literature on Bohemian and particularly Loetz glass. The orange bowl is often associated with Wiener Werkstaette and called a Dagobert Peche design, but I think that the situation is more complex than that. Like in the case of Powolny and the Werksbund Exhibition, the primary design was probably by Peche and commissioned by the WW, but after that there came an entire line of factory designs based on that one. I know them in 5 + 1 colors: yellow, orange, white / ivory, red and light blue + green which I have not seen in person, but which allegedly also exists. I also know of four decorations: none, identical flowers, interchanging flowers in two designs (like on the bowl) and a round floral ornament. I have also seen those in about ten different shapes, most of them known with other Loetz designs as well.
The ornament on the green example is also associated with Dagobert Peche and possibly executed by Hosch. That green color is recorded in Jitka's book and belongs to the rarest known: dark green opal.