jQuery Grid Plugin - jqGrid

Hi, I'm trying to set the color of the values in my Date column to red but only find syntax to set a single cell not the entire column.  Would I get the total rows displayed in the grid and then loop through them and set the color of the rowid one by one?

for (i = 0; i++; i < totalrowsingrid ) {

$("#mygrid").jqGrid("setCell",rowid,"Date","",{'font-weight': 'bold',color: 'red','text-align':'center'});

}

CORRECTION: even if I replace rowid with an actual row number in the example aboverit doesn't set the cell color.

This syntax works to change a single cell color but not the entire column

 $("#mygrid tr:nth-child(3) td:nth-child(2)").css("color", "red");

I've also tried to set this in the colmodel like this and it didn't show any changes.  I am using the custom theme redmond and have heard that it can prevent grid styles from being displayed?

<style>

.test {
 color: '#FF0000';

}

</style>

colModel :[

{name:'Date', index:'Date', width:70, align:'left',classes: 'test'}

]

Thanks!