That's the thing. It saved the change for a while, and then reverted back. I don't know when or why or how, just that it was okay, and then changed by itself.
Did you close Robohelp and reopen it before you tried it again? Maybe that's what did it. This is one of those things that people would need to test at Adobe - I'll report it as a bug, or request that they AT LEAST change the default color to anything but gray.
Hopefully Peter won't mind my offering another possible suggestion.
Try creating a new Single Source Layout. Just right-click the Single Source Layouts pod and create a new layout. My thought here is that perhaps the file holding the recipe for that layout may have somehow become a bit corrupt and creating a new SSL recipe may make things finally "stick".
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