Inside are all the delicious colours..over 1900!
Recently I ordered some elastics. I picked the colours on the chart that matched what we wanted, and we were able to email the Pantone numbers to the elastic mill. They also have a Pantone chart as do all the manufacturers that are working with fabric colours and dyeing.
The coloured dots I put there so I can remember which ones I ordered!
Once the lab dips (3 samples of the actual elastic dyed to our colours) come in, we compare each to the Pantone chart and to the fabrics we are matching. One of the three lab dips will almost certainly be an exact match..the other two will be very, very close.