Hi
Thanks for contacting us. Use this custom CSS
#sp-footer, #sp-bottom{
background: #2A402C !important;
}
body .sppb-btn.sppb-btn-default, body .sppb-btn.sppb-btn-primary, body .sppb-btn.btn-primary, body .sppb-btn.spbooking-btn-primary, body .btn.sppb-btn-default, body .btn.sppb-btn-primary, body .btn.btn-primary, body .btn.spbooking-btn-primary, .spbooking-btn.sppb-btn-default, .spbooking-btn.sppb-btn-primary, .spbooking-btn.btn-primary, .spbooking-btn.spbooking-btn-primary{
background-color: yellow !important;
}
Path towards custom CSS: Extensions>Templates>Styles> Click on your current default template name then choose Template Options. Then find custom CSS within the custom code.
-Regards.