I am having a problem that never happened in all the years since I started using Sketchup. It may be a dumb question but since it never happened to me I do not know how to solve it.
When one starts modeling something there is no material attached to the shape created; in general it is white on one side and, say, gray on the backside. In one specific file when I create a rectangle it comes out with a material, in this case a pebble material, without my intending it to be so.
Any ideas as to how to get back to the original status? Thanks in advance.