Even so it's difficult to buy balloons at decoratorsquality from one balloonmanufactorer and if we have them, then we have problems with special colors.
On the order to decorate a lounge, hall and stage, mine client would only metallic or pearl balloons but we didn't have pearl-limegreen. The only way was to stuff a limegreen balloon inside a diamond clear one. So a bright shiny limegreen balloon was born. Our client was very satisfied and haven't seen the difference.
Ko Minderhoud CBA from Ballon & Ko, Oost-Souburg, The Netherlands.