There is something magical about brand spakin new Playdoh it smells great and has no crust yet and all the opportunity and possibility in the world. You can mash it and mold it turn it into anything and it has nothing mixed into it tainting it. It is perfect.
Then as you play with begins to get crusty and other colors and mixed in and all of a sudden you have gloop.
Life happens, sin happens, we are not perfect and the colors sure make it pretty.