Sorry for this, but I figured out that the problem is not as I explained it. I make Minecraft animation (Minecraft is a video game) and there is object which doesn't look right. Here is screenshot https://prikachi.com/images/573/6377573N.png . This thing with the light blue squares shouldn't look that orange. It must look like the gray objects next to it. [I imported the thing with the light blue squares later]