Blaze Orange, baby.
In '96 I was rear ended by a pickup driving octogenarian with caratacts while riding my Triumph and wearing a pearl silver Shoei. So I decided that fashion wasn't going to be part of my riding apparel decisions anymore.
Now Shoei no longer makes that color, and it's time to replace the lid, so I'm going to purchase either an X-11 or an RF1000 in white, and I'll custom paint the helmet in a couple of flourescent colors, including orange and yellow.
With my orange leathers, I can be seen by the legally blind. People don't cut me off or turn left in front of me anymore. ( though I still don't trust that they won't...)