Building on Visualization #1, this quilt contrasts the cochineal-dyed wool treated with post-dyebath modifiers (top squares) with the unmodified dyed fabric (background circles).
These swatches commemorate the results of the first experiment with Annelise's Datacolor Ahiba IR, named "Holde" after Dr. Holde Puchtler, a pioneer in adoption of dye stains in histochemistry.