Photo is courtesy of Dr. Haim Grossman.
Since I helped organize the Magen David Festival in Yavne I was very pleased to read what Dov Gutterman wrote on 7 June 2007 in the Flags of the World website:
I was invited to give a lecture during a "Magen David Festival" held in the city of Yavne on Passover. Just before me, there was a lecture by Dr. Haim Grossman, who lectured about "Herzel and the Magen David", and his findings gave me the missing link.
As we know, Herzl's idea about the flag of the Jewish homeland was made of seven gold stars on white background. Dr. Grossman sent me scan from Herz'l diary in which one can see that the stars were arranged as such: 6 stars will make a virtual Magen David and the seventh star will be above them. Putting gold stars on white flag is not a good idea as in quite a short distance this flag will be seen as white-only flag, and therefore, it is not surprising that it was not adopted.
However, Herzl designed one thing more. He designed an emblem for the Zionist Congress. Again, thanks to Dr. Grossman findings, we can see that Herzl's idea was exactly the same as the central device of the first Zionist flag.
So, Wolfson may "invent" the blue stripes but for the center of the flag he took the Zionist Congress emblem designed by Herz'l.