I made one several years ago. I did do it in traditional red/white/black. I made 46 school houses for the 46 years the superintendent in our town worked in our district. She started as teacher and worked her way up to superintendent. I then had some other squares where everyone in the school signed it. She loved it. I made a small one with left over fabrics for my classroom.
I think green would be great instead of the red. Do one and see.