This isn't nearly as technologically radical, but a Tek scope of that era that we had in the lab then had a sequential colour display. A monochrome CRT with a fast-changing electronic colour filter in front of it. Totally sharp (for the era) colour graphics with no subpixels. Until you moved your head and you briefly saw the individual colour frames. The HP stuff was stodgy and boring and predictable by comparison.

The HP logic analyzers back then had a really neat touchscreen interface based on criss-crossing infrared beams in front of the CRT face. The only thing that I've ever used that felt even better than a capacitive touchscreen, though obviously lower resolution.