Thank you for your initial thoughts. I have adapted many a WordPress theme, work extensively with Firebug, always test CSS alterations in more than one browser and heard about child themes – albeit in an amateur capacity.
With P2 my alterations do not show up. Strange. I feel it may have to do with the “live update” feature of P2.
Anyway, I will investigate futher and look into the option of creating a child theme.
Thanks again.