seems not to be the answer.
At least - what I (think I) remember about the 3-colour version was that the colours should always rotate the same, 1-2-3.
Laura suggested the 3-colur version was meant to be woven weft-faced.
I took the draft from yesterday and asked for a weft-faced representation:
Hmm - but we all know that shifting the colours can make big difference. Below left started with orange, then yellow, red - below right the order is red, orange, yellow.
Apparently it is not THE solution...