Marco {panel} supports parameters like titleBGColor, it would be good to have textColor as well so that we have specify custom one (otherwise it defaults to black

How To replicate:

{panel:title=My Title| borderStyle=dashed| borderColor=#ccc| titleBGColor=#0d455a| bgColor=#FFFFCE}
a block of text surrounded with a *panel*
yet _another_ line
{panel} 

As you can see, Title is almost invisible due to dark background.