Don't forget, you can also change the names of the color presets for easy reference again.You can also add your own custom color preset here by selecting the add new color preset button. There are new color options for Vista and in this window you can change those colors for the specific areas.
Once you have the font set to your liking, click the OK button.
You can see a preview of the font you have selected in the preview window in the upper right hand side of the window.
If you want to import the current system colors into this section, then you can do that by selecting the import existing system colors button at the bottom of the window.
Above the description you have the "Change color" button and the color picker, both of which will allow you to change the selected color.
The screenshot below is the Edit fonts window that will appear when you select Change skin fonts from the Skin Studio menu.