Want to say that i like the color scheme of the geometry outputs on the VizByType component.
Though i wonder if it is possible to edit them. Sounds so obvious and easy but i think they are “hard coded” and can’t find a way to change them.
Specifically i want to change the transparency of the outdoor_shades output.
Also, re-reading your original question about transparency: Unfortunately, Rhino does not support transparent meshes and meshes are what is being used in the “HB Visualize by Type” and “HB Color Face Attributes” components.
The last solution I posted using the Grasshopper “Custom Preview” components can accept transparency, though. So that’s the solution that I would recommend for your case.