I have some Dyneema Gridstop purchased from a small packmaker that looks like the photo on T-H, with the dark, diagonal on the ripstop.
Also have some Spectra gridstop with no diagonal reinforcing thread, but a smaller ripstop, maybe only half as big. Have used this for about 5 years on a MYOG pack that was seam sealed with McNett SeamGrip and has not leaked.
The colors, except for the white spectra gridstop, are the same dark color that could be either very dark green or black, hard to tell.
If you are intersted in a yard of either, you can PM me to discuss terms. I won't be using it, but want to be paid for shipping, which has not been very expensive when folded in an envelope to and from Oz.