Hi G S S,
The PagerStyle BackColor property has the same behavior as WebControl.BackColor, so you can refer to the ASP.NET documentation to learn more about it.
The end result when using the property is the same no matter how you set it, given that you supply a valid value. It matters whether you set BackColor programmatically or declaratively and want to use a HEX color representation:
BackColor = ColorTranslator.FromHtml("#aabbcc")
You should also be aware that BackColor does not influence/remove any background images applied to the element (control), so the applied background color will be visible only where there is no background image, unless you remove the background image explicitly with a CSS rule.
the Telerik team