Envelope properties?

Is there a place to change the properties that a part shows up as in an assembly when set as an envelop part? I'm on 2018 SP5 and as far as I know envelopes always show up as dark and rather opaque which makes it difficult to see the rest of the assembly. See below. I want the big black sphere to be significantly more transparent and probably a different color.

SolidworksModeling And Assemblies