Fabric Paint?
I have never done this but maybe fabric paint is an option. There looks to be enough of the old logo to have a good reference on filling the rest in, and any hobby store should have it. I have no idea how durable it would be though.
First let me say hello to everyone because I'm new here. I have always loved vacuums and no one has ever really understood why. It's great to have finally found a place where people love them too! So I guess this first post will be about a recent discovery inside my 561. I have had this machine...