The undyed yarn used in this pattern isn't available in the Ravelry database, but you can find it here.
This pattern includes a four-part video tutorial. You can view the videos on my website here:
In this tutorial, we’re going to learn how to do something very unique. We’re going to knit this sweater using undyed yarn, then dye it (as a completed garment) to get the Ombré effect. Ombré dyeing gives us a very light color at the top of the sweater, gradually getting darker toward the bottom.