I guess I will contact the shop. The owner is very nice and usually very accommodating. The background consists of 3 different fabrics but I think anything in that color family will be fine - doesn't need to be one of the 3 originals I don't think.
I was simply thinking that if I could use 4" vs 4.5" squares I would have enough fabric and I wouldn't need to bother the shop. The owner and one other employee are working their fingers off to keep customers happy and satisfied and I really didn't want to bother them if I didn't need to.
And thanks for the video. I'll need to watch that as well so I can figure out what I'm supposed to do with this silly thing, lol.