Ever wonder how to make the inside faces of an object to be more visible in Blender? You don't need any special add-on. It's a feature called face orientation. Here's how to use it:
You can enable this feature under the Viewport Overlays menu, as shown in the screenshot below:
However, the default color for face orientation will overlay the object's material color, as shown in the screenshot below:
If you just want to differentiate between the outside and inside faces without overlaying the object's material color, you can set the theme for the face orientation feature in Edit > Preferences > Themes > 3D Viewport and set the front side color's alpha to
0, as shown in the screenshot below:
Bammm! It's done!
I hope this help!