Open u Hypershade select attributes and as soon in iamgei want Animate snow color of it so i will right click on the name of attributes which i want to Animate for eg i want Animate snow color click on named as i have highlight it u now set key and other. You use same thing attributes too but for some attributes set key is not able u have use set driven key
Images
[img=https://img142.imageshack.us/img142/8148/1it8.th.jpg]