Try adding these lines to your custom.css and just change to the colors you want.
#top .primary-background, .dropcap2, div .button, input[type=”submit”], #submit, .info_text_header, .numeric_controls a:hover, .numeric_controls .active_item, .contentSlideControlls a.activeItem, #top th, #top .related_posts .contentSlideControlls a.activeItem, #top .arrow_controls a, #main .content #searchsubmit:hover, .callout a {
background-color: #333333;
}
#top .on-primary-color, #top .on-primary-color a, .dropcap2, div .button, input[type=”submit”], #submit, .info_text_header, .info_text_header a, .info_text_header a:hover, .contentSlideControlls a.activeItem, #top .related_posts .contentSlideControlls a.activeItem, .contentSlideControlls a:hover, #top .related_posts .contentSlideControlls a:hover, #top th, #top th a, a.button:hover, #top #wrap_all .sub_menu .menu > .current_page_item > a {
color: #444444;
}