I really liked the millennium shift to clear deodorant. Not because I was worried about white marks on my black sweaters or anything, but because - at the same time - they went clear with the plastic casing as well. Now I could see how much deodorant I had left and how much I used in one sitting. Fascinating.
Chapstick hasn't gotten on board with this. The amount of chapstick left in my tube is still shrouded in mystery.