header logo white background

hello, i have my site up on http://www.dharmyog.com the top header logo i replced the standard logo by accesspress lite theme with my own but there is still the backgroup white gradient which causes a conflict on the white color (#ffffff). how can i change the gradient white so the logo can match and blend with the background. i looked in the css but its hard to tell exactly where to make this change. please help as i have to go live with the site soon. please check the site and see the problem on the site http://www.dharmyog.com