Wear the colours of your rivlas for a day for sponsorship that is? Heard it on the wireless today. I wouldn't. Never. Not even to build a thousand wells in Africa. I would happily donate the money. But wear a rag shirt? No thanks.
Could you picture yourself in one? When I see one on the street I just look at the muppet wearing it and that person is immediately at the bottom of the pile. To put it politely!