From the book:
Andean women create the rainbows found in this purse and in many of their knit and woven textiles by using yarn scraps left over from other projects.

Yarn is as follows:
Color A: 100yd/91m in natural
Color B: 25yd/23m in brown

5yd/4.5m each of colors for stripes:
Color C: green
Color D: light pink
Color E: medium pink
Color F: dark pink
Color G: purple
Color H: light blue
Color J: orange
Color K: yellow
Color L: light green
Color M: dark green

Needles are specified as DPNs
A Tapestry needle is also called for.