Fugitive Ink Not On Stamp From France?

I recently read on another forum the opinion of a veteran poster to the effect of
-no stamps from France had been printed in fugitive ink that he had seen at the time

Is this correct?
I know I've seen modern stamps with fugitive ink so I'm not sure if it was a joke about a really common thing or fact about a time line that dates fugitive ink use?

I'll post here saves space
Found another one with a ink issue
Is this one "kissed"?

Cannot confirm that, albeit, I do not recall any myself.
What one has to overcome however, is aging, poor husbandry, light damage, and "shades" in all French stamps.
Esp with "used "stamps.

Shades is one I have tried to avoid
I could ask a few real quick :)
But I'll wait hopefully 2021 Maury has shades listed?
Right now I'm just trying to use the right words to describe things

(I did read the 75 c post recently) aniline ink?
Got a few with that as well (turned my brown stamp pink)





And my pink stamp brown

Two=nothing special (old beat up anyway)
still would like to know if "kissed" is the correct terminology

And I gotta ask is this a re entry or double? (Stamp on the right)

Looks like a Double frappe, or Re-Entry.

I'll happily add that label

Might sound silly but I'm looking for something to label "kiss printed" as an example
So here's another shot Scott #c31 palm and village (waiting for the Maury to get here)
Kissed?

I recently read a thread about the C.O.A series
A person wrote about working on those stamps and told about the paint on the salvage
I can't remember if it was the end of the night or week
For the life of me I can't find it, I thought I saved it but nope
If you happen to have read this could you point me in the right direction
Also I read something about military franking it gave awesome information and it showed great photos (I'd like to find that again)