jail time for a color

The Stout family live in an area that is governed by a homeowner's association.  There are a lot of rules but they have followed all of them until they painted their daughters' swing set purple.  Now they're involved in a lawsuit that could end them in jail.  Why is the color purple offensive to the association?  Because it isn't harmonious with the surrounding community.  What?  That's just crazy to possibly go to jail over something so silly.  The homeowner's association needs to get over themselves.  wrong color