An impromptu version was later published is "Improv Nightshades" in [[Art of Astonishment Vol 1.
Ultra Visual Nightshades by Mark Allen was released as a "Paul Harris Presents" product (2007). It allowed for the glasses to move without any cover with just a little shake.
An improved version of the pen, along with routine "Bulldog Nightshades", was released on Harris' True Astonishment series DVD #9.
- "Let George Do It" (a presentation for Paul Harris' NightShades) in the "Little Egypt Gazette: Lecture '96" by Steve Bryant (1996)