Self expression? Yeah, I get it but why would you subject your neighbors to this nightmare every day? The article claims there is no law against it and since there is no home owner association, the neighborhood is powerless to do a thing about it.
If someone lives on acres of land, I don't care if they paint their house green with peach polka dots. However, when you are part of a neighborhood, everything you do can effect property values of your neighbors.
Why would a person move into a neighborhood and proceed to alienate the entire block immediately?