Skinning the datagrid

hi

can someone please tell how do i change the header of the datagrid component?

i’ve tryed with

datagrid.setStyle(“headerColor”,“0x000000”) for an example and it changes color but keeps the gradient pattern underneath it

i’ve tryied to apply a CSS style and it didin’t work to

all i want is to get rid of that gradient, can someone tell me how?

thanks