The Crochet Ombre Moss Stitch Blanket is the Moss Stitch. Caron Jumbo yarn naturally transitions the colours. Caron One Pound is the primary colour and is used for two rows. Caron Jumbo takes over for the next two rows. It keeps alternating.
You don't need to cut the yarn to change the colour. You carry the yarn up on the edge when not used, and the border will cover it.
Another Moss Stitch Concept
A couple years ago, the moss stitch with left over variegated yarns took the internet by storm. It was the Variegated Moss Stitch in Rows and Waves.