Lime green is a VERY popular color now. You will see a LOT of non-DIS folks wearing lime green these days. If you really want to be identified as a DISer you will need lime green ribbons attached somewhere. It's the ribbons that are strictly DIS material. I take several 6" lengths of curling ribbon and have them tied to my waist pouch, front and back. Some tie them to strollers others have them pinned to a shirt. I've seen others who have made a loop pin with wide ribbon.