bleu cyclades was a part of ysl's 2014 summer collection bleus lumiere.
one of the best things about bleu cyclades, that is different than dior tuxedo, ysl bleu cobalt and similar, is that it's not too dark. the shade of blue is somewhere between royal blue and navy, but never black. the shimmer is rich and gorgeous.
again, formula is amazing and there is no staining, so, total recommendation.
natural light:
i used base (china glaze strong adhesion) + two layers of polish + top coat (essence btgnts)