Display Rollout (Skin Modifier)

Controls how Skin features appear in viewports.

Select a mesh, patch, or NURBS object. > Modify panel > Modifier List > Object-Space Modifiers > Skin > Display rollout
Select a mesh, patch, or NURBS object. > Modifiers menu > Animation Modifiers > Skin > Display rollout

Interface

Show Colored Vertices: Colors vertices in viewports according to their weights.
Show Colored Faces: Colors faces in viewports according to their weights.
Color All Weights: Assigns a color to every bone in the envelope. The vertex weighting blends the colors together.
Tip: You can toggle this feature to get a global view of all weight regions across your model at once.

Tip: You can also assign a color to unweighted vertices: Open the Customize User Interface dialog and, on the Colors panel, choose Skin Colors from the Elements drop-down list.
Show All Envelopes: Displays all envelopes at the same time.
Show All Vertices: Draws a small tick at every vertex. On a patch surface, it will also draw all the handles.
Show All Gizmos: Displays all the gizmos in addition to the currently selected gizmo.
Show No Envelopes: Causes no envelopes to be displayed even when an envelope is selected.
Show Hidden Vertices: When on, hidden vertices are visible. Otherwise, they remain hidden until you enable the option or go into the object's modifier (Editable Mesh or Editable Poly), and then click Unhide All on the Selection rollout or Edit Geometry rollout, respectively. Default=off.

These options determine which elements will be drawn on top of all other objects in viewports.