Since SP doesn't make a 2u DELETE I decided to do it myself. Since the font they use (Gorton Modified) doesn't exist as a computer typeface, I used Gotham Rounded and tweaked the letters and spacing using Illustrator until the result looked close enough to satisfy me. The "E" needed the most work. I decreased the width and raised the middle line slightly. Then I printed on transparent label paper and stuck it on a blank 2u SA Ice Cap.
The label will probably pick up dirt and or start to peel off at some point, but since I don't use that key all that much, it should hold up for long enough and I can just replace it as necessary.