Speaker Repair Pros (yes I know them) are not a Celestion dealer, they make up their own kits from parts. The owner is a good guy, I have him recenter, reglue and recharge client's frames when needed before I recone them.I've had a look around the net and the closest I found was this: http://www.speakerrepairpros.com/services.html
Maybe they can point you in the right direction.
Seeing lots of kits for the Blue, but not Cream.
Is there a chance the Cream cone is also fitted in a different model?
Probably recovering from NAMM-THRAX and in the hospital! Everyone who goes to NAMM is sick for a month afterwards, or at least a lot of them. One of the reasons I quit going to NAMM.well I guess I'll have to wait dr.decibel....he's on break till the 10th....