Why is the countertop black?

When creating a kitchen countertop, you should install the sink and stove first before creating the countertop. There are two reasons why the countertop may appear black:

1. Overlapping countertops: Creating the countertop twice can cause it to turn black. You can right-click on the countertop and select Delete.
2. Display issue: The black appearance might only be a display issue and won't appear black during rendering. This indicates that it’s just a display error, and the countertop itself is not affected.