One final piece is planned in the double twill series. This one will flip some of the blocks so that the twill line runs in the opposite direction. It is a simple matter to flip a block horizontally in the liftplan, but doing so changes the dark/light order in the warp. Solution? After flipping the block, wrap it one pixel horizontally, and the correct dark/light relationship appears.
The 3-color weft rotation is constant throughout. It's magic! Tweaking those 3 colors to get the most pleasing effect will be interesting. Red/yellow/green? Orange/pale blue/purple? Terracotta/mustard/forest green? Hm-m-m. Decisions, decisions.
Click to enlarge for best effect.