Custom CSS

I want to provide my own custom style. I followed the instructions:

Copy the coda-slider-3.0.css file and move it to your themes root directory and rename it to coda-slider.css. When outputting the CSS the plugin looks for this file. If not found the defualt css will be added.

This didn’t work. When I view my page, it is still reading the coda-slider-3.0.css file from the plugin directory, which I’ve confirmed via my developer toolbar. (I’ve tried clearing my cache, didn’t help.) Is there something else I need to do?

http://wordpress.org/extend/plugins/wp-coda-slider/