There is, but it is based on the theme, which is what those suggestions were all about.
You have to understand that Access doesn't draw windows. It only fills in windows. Windows draws (empty) windows and leaves the rest to you. But that means you have no ability to reset title bar colors from Access-based windows unless you somehow find the Windows theme that governs creation of ALL windows - including those used by Excel, Word, Windows Explorer (when windowed), and your favorite windowed game.
I looked for this, trying to find the things you could reveal with something if you know its hwnd (window handle), but I'm apparently not asking the right questions either. I don't see anything in my References library that looks right for the structures you need because they are owned by SYSTEM and might not be in a public library. I actually DID find a System library but what was in it didn't seem relevant to window drawing.
I also have a 5-volume set of the Win32 API books but that didn't seem to help much either. They have a few windows structures but always talk about how the colors MUST be chosen from the current Windows theme. If you could find the structure that defines themes, you can change its color - but in so doing, you will change the color of EVERY window currently open on your desktop. AND given Windows security, if you had a Win10 version, you might have an alert from Windows Defender complaining about how a program was attempting to alter system configuration data. Definitely not a good thing.
I think you are stuck with the "Windows Theme" answer for now, unless someone else has researched this from a different direction and stumbled across a solution.