Needed - better control over the messageButton background and text color

[GaryCuevas]

The code for the messageButton seems to be hard-coded to make the button white, and to use the slide color as the the text color.

This ends up being unworkable if the selected slide background color is white. Then you get white text on a white button on a white slide!

[makcakaya]

I encountered the same problem. When background color is white, the text and the message button breaks the view.