The color for the drop down menu of a menu ring is taken from the system colors found in the Control Panel >> Display settings under the Appearance tab. CVI does not have a function for editing this color value nor does the UI editor have a setting for this. If you want to change the drop down menu color you will either have to change the setting in Control Panel as I described above or check to see if there is a Windows SDK function that allows you to change this (I know there is a Visual Basic API constant that lets you set this setting, so I would imagine that there is an SDK function for it as well.)
Jason F.
Applications Engineer
National Instruments
www.ni.com/ask