Hi all

I'm new to Solidworks and learning how to make the animation.

This is my assembly consist of different materials and colors.

I start to play with fade in an invisible(hide) assembly, and reappeared at the end of the animation.I

However, I noticed the whole assembly will only appeared in one material( default material)  ,
and can only be replaced by single material as well.

I need to keep the entire material and color throughout the animation, just change the transparency instead.

PS. If I switch to Modeling Mode, the materials and colors is normal again.
Could someone help me, please? I have been struggle with this the whole day.

Thanks in advanced.