All throughout the Windows UX Guide it is suggested to use the appropriate SystemColors within an application to ensure that an application's default theme is consistent with the rest of the system. I totally agree; the only problem is that there seems to be no guide for how named values within the SystemColors type map to actual common parts of a typical user interface. Instead we are given names like Caption and expected to understand what controls that will apply to.
Is there anywhere that a developer can find a decent set of Visual Guidelines for how the values in SystemColors maps to a common user interface?
As an example of what I'm looking for, in the Windows UX Guide there is a concept of Main Instruction under the section on User Interface Text which typically looks like a dark blue color in the most recent default Windows themes. What SystemColor is this so that I can have my own "Main Instructions" labels use that same color?