I tried adding color and it worked, but I couldn't remove it or set it to be transparent.

I'm showing you an example in the conversation below

The effect we want is the portal effect, and the things inside the portal cannot come out. However, on some devices, it will appear that the things inside the portal lose the constraints and restrictions of the portal, and exceed the limitations of the portal, as shown in the figure As shown, the background of the normal sweeping robot is inside the portal, but it is highlighted, and the fingerprint next to it also uses the portal component, and loses the portal restrictions.