Older Rolex SuperLuminova dials…

Is the lume on hte other watches you're looking at green under ambient light? May make a difference.

This also happens with the BB58 blue.

I had an EXP II once which dated back to the era of Donn's watch and it glowed in the exact same manner once when it was under a UV fluoro light whilst I was attending a function on a party boat.
It never happened again as far as I can ever recall but I didn't keep that watch for very long.
I put it down to the white pigment of the lume in combination of the specific band of light edited from that fluoro.
I have seen a similar phenomenon at a dance studio many years ago where there was one particular fluoro light on the ceiling that made the white straps of some girls underwear glow a bright violet colour when the other lights were turned off if their blouse was even fractionally sheer. I don't know what the material was on their underwear but it was obviously extremely white and it reacted to the frequency of the UV light. Perhaps it was Nylon👎
I suppose it may be similar to the old bank account passbooks with the signature of the account holder on the back page written in invisible ink. Whenever a withdrawal was made from the account, the bank teller would hold the passbook under what was called the "black light" to compare the signature in the passbook to the one on the withdrawal slip. Unless it was held under the black light, the signature was not visible but it would glow a bright violet colour.
Also specific fluoro lights over aquariums can enhance the colours of the fish despite glowing white to the naked eye or they can be a certain light frequency that makes the plants in the aquariums grow better.

Any way one looks at it, the particular light source is the common denominator with regard to what effects are observed.