Ok. I bought portraiture and love it except for one thing.

When I process a photo and use portraiture once my image is saved the colors dull. I don't know what is going on but its irritating me. Has anyone had this problem? HELP!

Colour space problem? What profile is being attached?

I usually have to adjust brightness, contrast, and saturation while using it, and/or after using it, and then sharpen a little in the end. Every image reacts a little differently. Also make sure the image is flattened before you use it. It is also nice to follow it with Kubota's Daily Multi-Vitamin filter. You may have to raise the d-max levels (blacks) after doing it though, or lower contrast slightly.