Susie,
I think thats a great project, and stripes aren't hard to do.
Blue and yellow , hmmm :thinking: - that would go great with Ingrid's maize and blue clogs!

GO BLUE!
Try Knitpicks or some of the other online yarn stores (there's a thread of addresses for online yarn stores on here somewhere) for reasonably priced yarn.
Happy yarn hunting!
Mary