I try to always wear brightly colored jerseys when riding in traffic, and I've got a whole collection of yellow and neon jerseys, jackets and vests for riding in the dark and dim light. However, I'm not so big on the whole messaging thing. I don't want drivers to get further distracted trying to read a message on my jersey -- I just want them to see me. Most drivers do not want to hit cyclists, they are just distracted or not paying attention. The psychopaths won't care what you are wearing.