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.
WMI Performance Adapter. The WMI Performance Adapter (wmiApSrv) service provides performance library information from WMI high-performance providers. Applications and services can provide performance counters in two ways: they can write a WMI high-performance provider or write a performance library.