I think this is what I was looking for (although it doesn't have PMS color integration.) It works with hex/rgb well, and has a great screen sample eye-dropper which allows you to sample anything you see, without having to take a screen capture and then bring it into Photoshop, etc.
Streamline application. Nice.
Reshared post from +Chris Galardi
Beautiful and amazingly useful.
Gradient App for OS X | The Missing Link between Web Designers and Colors
A simple and useful app for Mac OSX to help web designers speed up the creation of CSS gradients.
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