public void setOpacite(double opacite) {
        // Swap les couleurs
        Random rnd = new Random();
        if (partyMode) {
            do {
                r = rnd.nextBoolean() ? 255 : 0;
                v = rnd.nextBoolean() ? 255 : 0;
                b = rnd.nextBoolean() ? 255 : 0;
            } while (r == v && r == b);
        } else {
            r = 255;
            v = 255;
            b = 255;
        }
        this.opacite = opacite;
    }