what would be the correct way to style the pie chart labels to add boxes and/or background colors?
This is the relevant code from the ChairDirector documentation:
# Set the sector label style to Arial Bold 10pt, with a dark grey (444444) border
$textBoxObj = $c->setLabelStyle("arialbd.ttf", 10);
$textBoxObj->setBackground(Transparent, 0x444444);