You can get this information using the API call below. Reference the MSKB article How to Change the BackColor of a ToolBar When It's Docked for the complete list of System Colors.

DECLARE INTEGER GetSysColor in win32api integer  
COLOR_HIGHLIGHT = GetSysColor(13)
COLOR_HIGHLIGHTTEXT = GetSysColor(14)

>I need to determine the Windows Control Panel Settings for the Selected Item Back & Fore Colors? How do I do it?