Mr. Red, Mr. Yellow and Mr. Green were chatting in communicator. They were wearing a Red shirt, a Yellow shirt and a Green shirt, not necessarily in the same order. Mr. Green sent message, "Hi everybody, we all are wearing shirts that are of the same color as our names but none of us is wearing a shirt that is the same color as his name." On that a person wearing the Yellow shirt replied, "What difference does that make?" . Can you tell what color shirt each of the three persons had on?