There are some of us who use the colors of the key straps to identify what is tethered to those straps. Some of us like long straps, some short. There are 7 colors offered, 3 long, 3 short, and black available in both lengths.
I wish both sizes were available in all 7 colors, especially since you are now providing more O Rings. I have to repeat colors, and it would be more organized with more color/length choices.