#1. Change background color: use css style
table.shop_attributes tr:nth-of-type(odd) {
background-color: #your-color !importaint;
}
#2. Setup background color for breadcrumb:
.freshio-breadcrumb {
background: #your-color !importaint;
color: #your-color !importaint;
}
#3. Header menu background color:
.header-2 .header-bottom {
background-color: #your-color !importaint;
}