These two pencils are made from the same blank. I painted the interior drill hole with a thin layer of basic rattle can spray paint (one white and one black).
Many beautiful acrylic blanks are translucent. If you paint the interior of you can massively affect the look. If you don’t, the brass tube may very well show through. This can be a desired look, but more often than not it will detract from the blank.
Why not just paint the tube? Because there will be a layer of epoxy/glue between the tube and the blank that may end up being visible.
Anywho, I thought this visual would be helpful to newer turners (like myself). I first saw an example of the effect on a yellow blank in a Youtube video of a demo done by Mark Dreyer. That guy is awesome.