The idea is suggested all over blogs and Catholic News via the internet. I'm giving credit to Rocco Palmo. Wear red this Sunday. It's Pentecost and so it's fitting. Didn't you wear a Red Sox shirt for opening day of the Red Sox? Don't you wear red, white, and blue for July 4th? What about Christmasy clothes for Christmas? Well?
Think of red as being celebratory. It's a symbol of the Holy Spirit.
Father will wear red.