Marc Ramsey wrote:

An indicator for an AoA meter could consist of something as simple as
three LEDs, say a bright red one for approaching stall, green for
minimum sink, blue for best L/D and above, with the red LED blinking
faster as AoA gets closer to stall. The LEDs could be mounted on a
short stick above the instrument glare shield, or even attached to
sunglasses

Or even better, install a fist which knocks your head every time you get
slow... I still can't see the advantage of three LEDs over one pointer.
Obviously I'm getting old...