Thanks all!
Rik... I dusted off a table top camera set-up I made rather than use the microscope since the magnification was not too high. This also provides a lot more access and options for the background. This one happened to be quite serendipitous. I wanted to first finalize the primary subject lighting and then play around with the background. But while working on the main subject lighting I noticed that the room in the background (a very out of focus kitchen area) was bathed in skylight from a large window off to the right. Since the camera was set for "tungsten" for the main light, this background light was recorded blue, and had a nice variation in tone. The right eye and antenna showed a bit of reflection from this window light. I liked the effect so I just used it.
(BTW... I needed a somewhat larger diffuser than was on hand, so this new one was made from a toy "wiffle ball"

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