Grapes
The Bible often uses things that were common to the lives of the people at the time they were written. We know grapes pretty well but the Bible also sometimes uses grapes to represent people. That analogy is quite appropriate. Like grapes the skins come in many colors. Under the skin, however, a green grape and a purple grape look pretty much the same. But God want's none of that. He wants the "juice" that comes from squeezing the grape.
The bodies that are so intricate and amazing to us have no future. We sometimes spend too much time on them and forget that their ultimate destiny is to rot away or to be cremated first.