Unity 2017 -> 2019 gui issue

Unity Engine
1

I upgraded from Unity 2017 to 2019.

Editor → Play

In 2017 a gui method without a background image appears fine as clear.

In 2019 a gui method without a background image has a GRAY highlight

For example if I use GUI.Box with no background it is gray in 2019
In 2017 it was clear.

I have spent 2 hours trying to figure out how to disable this gray. How do I do it? I don’t want to see it.

2

I found a work around. Put a 1x1 clear image in the background of the guiskin you are using.