Thanks for the information. I checked both of these products out and the 3M one is only available in Black and can't find anybody close by that has the other one in stock.
Originally I stated that my car had grey caulking, but it is fact off white. I found some off white caulking compound today at the hardware store. I've been in the auto industry restoring cars for 30 years and never seen it availalble in off white. I guess I learnt something today.