QCalendarWidget background image

[khcbabu]

how can I set background image of QCalendarWidget. I can paint a particular cell using
QCalendarWidget:: paintCell
I tried using stylesheet , its not working- How can I set a background image or background transparent of a QCalendarWidget

QTableView{
background-color:rgb(0, 100, 69);
}
for this it works, but
QTableView{
background-image:url(....full image path);
}
never works........

and also how can I set colors to
Vertical and Horizontal Headers .