How to change the header background color in output grid controls

To change the header background color in output grid controls;

• Open Designer Interface,
• Go to the ‘Stylesheet’ module.
• Add a new stylesheet.
• Enter the CSS rule for changing the header background color in output grid controls.
• Save the stylesheet by clicking on the “Save” button.

th[class*="output-grid-header"] {
    background-color: cornsilk !important;
}