Thanks very much Trev and Marty,
Here's an approximate translation of the lyrics:

Nothing is ever truly all white
Nothing is ever truly all black
The Manichean mind
Is a narrow mind
Whose objectivity
Will remain limited
Nothing is ever truly all black
Nothing is ever truly all white

Chorus:
Do you hear the elephants trumpeting?
Who do you think they are?
The gray they wear while parading,
It suits them perfectly!

There's more than just snow
Like Nadège thought
There's more than just ebony
Like Carmen thought
There are mixed colors
That, fortunately, emerge
Nothing is truly all black
Nothing is truly all white

Nothing is truly all white
Nothing is truly all black
A range of grays
It's always very pretty
Light gray or dark gray
It's better to have nuances
Nothing is truly all black
Nothing is truly all white