Yarns used:
MC: Drops Nord #01 offwhite - 100gr
CC: Lang Millecolori Sock & Lace Luxe #0056 Pastels – 100 gr
Or any other nice sock weight (fingering) yarn in same weight – appr 400m / 100gr.
To achieve the colourful stripes you should use yarns with long gradient colour repeats.

Happy knitting!