@ Teri, I am just happy that it was such a simple fix.
For anyone wondering, Teri had issues where selecting a color with the Dropper tool was not kept when the Brush tool was activated, which meant she could not create that Bokeh effect as in the tutorial. It turned out that a little check box in the Material palette labelled “All tools” needed to be CHECKED when the Brush tool was active but had accidentally been UNchecked. Simple fix to a strange issue. This could happen with any version of PSP, so if you ever have some odd color selection issue, check if that box is checked or not.