Bob Bachus
Lurker
Bob - See if this discussion discusses the issue: https://www.quora.com/Why-does-Andr...ckground-instead-of-black-Do-people-like-that
Looks like this is a function of the Google Now Launcher / Material Design. I'll live with it.
Thanks - that seems to be the answer. Luckily I have a choice of launchers. The SlimLauncher restores the background to transparent. I appreciate everyone's input.