uitable ColumnHeader background color

Hi everyone, I'm customizing a gui with an uitable. I've managed to change the color of a single cell, rows, cell selection color, the big grey backgroun of the uitable, and the RowHeaders background color to change that I do this.

jtable = findjobj(handles.uitable1);

jtable.getComponent(4).getComponent(0).getTableHeader.setBackground(javax.swing.plaf.ColorUIResource( 0, 1, 0) )

I've tried similar things for the ColumnHeader Backgroun but whitout success. Can anyone tell me how to do this?

Thank you very much and sorry for my english.