Transparency for specific objects in Grasshopper?

There´s a way, command or plugin for grasshopper to put objects (lines,arcs, dots) like guidelines( line types: hidden, dashed, center) or can I apply adjustable tranparency ?
I prefer to watch some lines with transparency or types instead turn off the preview.

Sorry if is so dumb question.

Human has some nice GH display options.

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i’ll check