These 'data pages' on the first Hayabusa from Mansyu (or Manshū) originate from an article by Richard Bueschel that appeared in the Air Pictorial magazine of May 1961.
The article presents two remarkably clear and sharp photographs of this aircraft. The colour scheme is presumed to be light grey or light blue (but could it be yellow?) with blue trim.
Image credits: © 1961 Richard Bueschel and Air Pictorial Magazine