Ahem~~~~ If YOU are making the quilt, and your idea sounds wonderful to me~~~ tell the room moms you thank them for their suggestions, but~~~~
One of my favorite quotes is: "God so loved the world, He did NOT send a committee."
You sound too nice for your own good. I think the teacher would love your idea, and the kids are participating. Primary colors are gender friendly..... for cryin' out lout!
Bless you, dear one. Have fun.