Smooth Faces DialogKeyCreator \ Modify \ Solid-Face \ Smooth-Faces-Dialog
The Smooth Faces Options dialog box appears when you select Modify>Solid Face>Smooth Face and click the desired edges for the faces you wish to modify on the model and click Done in the Selection dialog.
Original Face- Choose to display original face alongside the deform face.
Original/Deform Face Transparency- Will control the amount of transparency for visualization of internal geometry within the model in both a positive or negative direction. Use the slider to adjust or enter values up to 100.
Use the color pallet drop down menu to define unique colors to the Smooth Face representation for better visualization.