Pink walls in Math building

Right now I am spending some time at the recently renovated Institut Henri Poincare, a Math institute in Paris. In the main lecture room, the walls are painted a light but definite shade of pink.

Why pink? Could this be some kind of strange initiative to try, in this male-dominated world of Math, to make women feel more welcome?

Apparently some town in Mexico has some women-only taxis that are easily recognizable because they are all pink.

Those taxis also have special makeup mirrors in the backseat.

But I didn't notice any makeup mirrors at IHP.