Each of the pads comes with a multi-language label affixed to the bottom. Remove the entire label and select the correct language and adhere it to the flat end of your ink pad, so you see the color and the color name.
From one of the remaining labels, cut off some of the color and stick it on the inside of the open pad. Whether your ink pad is open or closed, you can see the color especially if you have several pads open.
Also, fill the top of your re-inker lid with glue.
Punch a 1/8” or ¼” circle and stick it to the top of your re-inker making it easy see the right color.