Exporting grid with backgroud colors to excel

Hello,

I’ve tried to export a grid to excel with background colors :

mygrid.toExcel(‘ext/dhtmlx/grid2excel/generate.php’, ‘full_color’);

Result : all the rows (except the header) background colors are white

Thanks in advance for your help

@++
JC

Hello.
Could you provide sample or maybe screenshots, link to your grid page?