I'd seen that response before and my question revolves around the fact that the problem runs deeper I think.
I don't think I'm in error to assume that both SpryAccordion.css and spry_custom.css control the display of the accordion panel in question.
If that is the case than how is it that since BOTH of those files contain the following rules:
.AccordionFocused .AccordionPanelOpen .AccordionPanelTab
and in BOTH files the rules contain different content, I should expect them to not work at cross purposes?