The colour scheme I recall was yellow on black. Version two, I think, but I'm not sure... I copied a copy I found -- no doubt already pirated by whoever left it there -- in the Economics computer lab onto a floppy ("crunchy", actually; a 3.5" diskette) back in ~1990-91. And then went on to implement a multi-variable linear regression algorihtm for my exam paper in statistics in it.