How to change fonts color ?

I don’t see a Read More section

Oh, I changed the sections’ name (Read more was the default setting). It is actually :
Quels bénéfices ?
Notre Approche
Pour qui ?
Thank you.

Appearance > Theme Options > Custom Style CSS

Add this code in the box.

.widget-title-home h3 {
    color: #009900;
}

Just edit the color I used

It works, thanks a lot Erik !!!!