Can you place place on your website a "COLOUR CHART" for all your markers. It should include number and NAME OF COLOUR and be in pdf format for everyone to download. It shouldn't cost you anything but would be a TREMENDOUS SERVICE TO YOUR CUSTOMERS.
I have several Brand name colour pencils where the colour is not on the pencil but is on the COLOUR CHART. When your customers are SWATCHING THE MARKERS they can write down NAME OF COLOUR AND NUMBER!
WOULD BE A BIG HELP,