^^^ 60s sometime-- a "device was sold to turn a b/w tv into a color tv. It was quite effective. We unrolled the transparent plastic film and put it onto the b/w screen. The top had a subtle blue tint, the center area was kind of brownish, and the lower part was, to the best of my recollection greenish. Made The Honeymooners "pop"!
Re: Acurite Lightning Detector-- not bad as a counter. Whenever a strong storm moved through here I got hits in the multi-hundreds range. It also indicated a coming electrical storm in so far as the number of hits would rise somewhat proportionally to the distance and intensity. Most of the time. But not always. And then there's when my neighbor is using his chainsaw.......