Did you know, on the bottom of each stamp pad is a sticker in four different languages stating the color of each stamp pad?
I put one on the front edge of my stamp pad lid. This tells me the color name while it is stored in my color cady.
I then cut the ends off of a second label and place them on the side lid near the pad. The reason I do this is so that when I am using multiple stamp pads I can quick see what color I am using. Many of our stamp pads look the same while open.