Check out the designs disclosed in a Cobra Golf patent application that published this week.
The images come from US Pub. No. The invention generally relates to a setting indicator for a golf club having an adjustable attribute. The invention provides a component to serve as a setting indicator or setting display device for a golf club or a golf club having a setting indicator. The setting indicator includes a window and an adjustment mechanism configured to provide a golf club with a selected attribute while also displaying an indicia through the window to provide information about the selected attribute.
Sure, I could see them incorporating phospholuminescent or glow-in-the-dark pigment, heck it might even be pretty cool, but “LEDs or other illumination elements within or around window” – give me a break. Prove me wrong and I will buy one!