French speakers voient rouge (see red), ont une peur blue (have a blue fear), or ont un rire jaune (have a yellow laugh), meaning they are angry, extremely anxious, or display a forced false laugh. English speakers see red, feel blue, or are green with envy, meaning they are angry, sad, or envious, respectively.

In language, we easily link colors and emotions. Source: Photo by Eliška Motisová on Unsplash