Now you mention it...

Wikipedia has it "exactly half way between yellow and green", and it was named after the color of a French liquer, but has it always been this light green shade? 

Many today remember it being a purplish red color, and are pointing to the change as another Mandela Effect.

It's taught in schools as being a tertiary color, but that doesn't really clear things up.

Let's just hope this isn't a color used on airport runways with any Mandela Effected pilots!

The great Puce switch debate

There is also the issue of puce. Many remember this being the color Charteuse is today, in other words the two switched over. There was an '80;s movie where someone wanted to color lollipops with it. The word "puce" also sounds made-up, or deliberately wrong, but it's real all right.

ZZ Top

ZZ Top sing "Charteuse" - are they onto the same thing here?

Chartreuse
You got the color that turns me loose
Chartreuse
That color just turns me loose
Better than Magenta
Better than Fuse
You got a shade that gets rid of the blues.

Of course, there is a drink called Chartreuse which is more like their style. It's a French liquer which is appropriately a greenish yellow color.

One explanation for this is that children are taught the colors for puce and charteuse at the same time, which are the red and green colors respectively, but don't have much call from then on to use this information - i.e. recall the memory. The idea is that they are both stored as a pair, but only years later when retrieving the memory, some swap over the two. At a subconcious level, they know, from learning as a child, the two colors and the two names, but apply the wrong one when they remember it all those years later.