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.