Just have a label in Firefox that says: CLOSED SOURCE icon on top so that we know we are about to visit a site where we can't see the source of the javascrip

Just have a label in Firefox that says: CLOSED SOURCE icon on top so that we know we are about to visit a site where we can't see the source of the javascript that is being run on our computer. The idea is to develop a culture for people to prefer OPEN SOURCED site vs a CLOSED SOURCED one.