Perhaps my choice of the term "resin beads" was not accurate although I have seen this term used before. A text that it consulted refers to "oily droplets".
Originally Posted by Photo Engineer
"Others though, notably those of the Ektachrome type, have oily droplets in the gelatine which have been used to suspend the color couplers. These droplets have a refractive index different from that of the gelatine when wet and give the film an opalescent appearance: the color balance also looks wrong when the film is wet."
The Agfa films do not use this method depending on the weight of the coupler molecules to prevent drift in the emulsion.