What you really want to watch out for even more so than color change, is meat or poultry that has a bad odor or is sticky, tacky, or slimy to the touch. Let your other senses be your guide in these instances. Read more: The Color of Meat and Poultry - USDA.
Windows Management Instrumentation(WMI) is a set of extensions to the Windows Driver Model that provides an operating system interface through which instrumented components can provide information and notification.
File: wmiexe.exe. Security Rating: The WMI service exe housing is part of the Windows OS that runs as a separate process (Win98/NT/2000) or part of SVCHOST (in Windows XP, Vista, Windows 7). It interacts with management applications through the COM interface.