Changing a custom belt entity graphics

[Skybeach88]

Hi all. So I am learning to mod by creating a mod that adds sever intermediate products to build an ultra class belt. I have everything done and included custom icons for all the items (just recolored default icons I pulled from the factorio files) I am currently trying to get the re-colored belt files to display for the actual placed entity but I cant seem to make any headway, I have been digging through the animation sections of the API documentation but I am not sure how to add them in and get them to display. any advice would be most helpful. I would also like to include the remnants as well. The only other thing I will ask is if anybody knows how to add the requirement of needing power, I would like these belts to use power to function.