How to change background color

What code are you using in the Custom Styles tab?

Right now i have erased all the code.
its blank

If you post the code you were using, I can take a look.

im not using any code ajay.

i isntalled the plugin and put the widget on my website.

the weidget works fine but it just doesnt look good because it doesnt match my page.

regards,
MJ

Can I see a link of your site / page where the widget is installed.