one idea, courtesy of Luciano:
Better that you display a little originality. On the gravest days of winter I put on my gray flannels, a cashmere tie in a sober color and my white linen jacket. The pants keep me warm. The tie gains me entrÃ©e into good restaurants. The blazer reminds me that summer will come again.
For summer months, personally, I could see it with medium blue or dark jeans, and contrasting (either brightly colored or dark colored) button up casual shirt. Lots of latitude with shoes. What do you typically wear with jeans?
More ideas, from the polo website: