When changing the color of wool while crocheting, it is common to integrate an additional color of wool. However, adding wool is time- consuming and it may affect the shape of the work. In metamoCrochet, we use wool which has been dyed with Metamo Ink and a crochet hook with a heating tip to deliberately change the color of the wool while crocheting. Furthermore, we propose a new method of crocheting in which the wool’s color is changed according to emotional or environ- mental elements.