The chrome curb strips are not cheap, but in my opinion they were worth it. That black trim piece on mine was just ugly and keeping it clean sucked.
Here's the link to them at Race & Street, you should meet Maggie there, she is a fabulous person to work with. Usually she can find lots of items that others can't.
PT Cruiser Curb Strips - Convertible (5pc): Race and Street
Here's mine with it installed:
