That will look great! You have got me thinking about this too. I live far enough in the country that no neighbors would need to be consulted, though I do't have a barn. My husband has suggested I paint our garage doors as quilt blocks, or even as whole quilts. He also has suggested barn quilts on his workshop and on the storage building. I am not sure I want to do THAT much work.
But you have got me thinking...
Dina