Can Material change smoothly over frames?

[devailo]

Hi, i am generating some objects which are small and grow in size and they stack up. But what i wanna do is make them white hot glowing when they are born. And the effect would be them appearing white and then cooling off to their normal color/material/ . Now i have a vray material with normal maps and such so can i make it transition from white to my vray material? 

thanks