I don't think there is any way to do that. It would be nice.
While we are waiting for the software engineers to implement your request, consider the following alternatives. When in MC mode, as shown above, you can hover your mouse over a window and press the space bar to toggle a better view of the window. There is also, "App expose" (see System Preferences, Trackpad, More gestures). You can hover your mouse over the application in the dock, then invoke App expose to see all open windows for that app (or do it to expose all windows for the current app). The names appear in this case.
I just got a new mac and was trying to figure out the same thing today!! I went from an older version to this 10.9. I called apple support, the tech had no idea what I was talking about. I was transferred to a manager who told me that it is not feature available on the new models. After a 40 minute conversation I was about to let it go and then I saw this post and became determined LOL ... and I figured it out (SMH apple support). So here is how you do you it:
- system preferences > trackpad > you want to make sure the "App Expose" is checked off > and you're done!!
- I am not able to upload a 2 photos so I will post a second screenshot of what it looks like once the preferences are set.