I found these single blade wipers:
Ultra SilBlade Colored Silicone Windshield Wipers
Here are the stainless steel on my chrome wiper arms.
They are top quality. Ultra® SilBlade wipers are guaranteed for 5 years. Conventional wipers wear out in 6 months to 1 year. In fact conventional wiper manufacturers recommend changing wiper blades every 6 months because of degradation to the rubber. As you can see they come in a lot of colors. Remember that the PT Cruiser wiper blades are different lengths. [8)]