Joy,
To change the font and color of a top-level panel, you'll have to do it in the Display Properties of your computer. To do that in XP, right-click on the desktop, select Properites, select the Appearance tab, click on the Advanced button, then select both the Active Title Bar and Inactive Title Bar items in the ring in order to change their font and color.
Keep in mind that this will change all windows, not just your CVI panel. Unfortunately, there's no easy way that I know of to change just one window.
Luis
NI