I heard back from Steve last night. He says:
Hi John, in scroll saw speak its called veining. It is done by cutting the line with the blade. I have cut several of ornaments without problems. I recommend using a number 3 blade. If the veining does not stand out enough try a number 5 blade.
On Tuesday, November 6, 2012, wrote:
Steve,
So it looks like they are supposed to be cut. I just wasn't clear if they berry shape was to be cut, drawn, or burned into the wood.
Thanks Steve et al.