在phpexcel中使用样式时，excel发现了不可读的内容

Question

I am trying to set background color of a call based on cell value, But i am getting error when i use the below code

function bgColor($cell,$color){
 global $F; 
$F->getStyle($cell)->applyFromArray(
            array(
                'fill' => array(
                    'type' => PHPExcel_Style_Fill::FILL_SOLID,
                    'startcolor' => array('rgb' => $color),
                        'endcolor' => array('rgb' => $color)
                    //'color' => array('argb' => $color)
                    )
            )
    );
}

if i use rgb the following error occurs

Repaired Part: /xl/styles.xml part with XML error. (Styles) Load error. Line 2, column 934. Removed Feature: Format from /xl/styles.xml part (Styles) Removed Records: Style from /xl/styles.xml part (Styles)

if i use argb the first cell is filled with black color, while the argument passed to the color is yellow.

Ca anyone please tell me what i am doing wrong here