Woocommerce Cart Darkened

You need to change the background colour in the CSS.

i.e.
Change this
table tbody td {
background-color: #000000;
}

To this
table tbody td {
background-color: #6ec1e4;
}

The do it for the other rows.

Also on your sales page you have the list style dot still showing i would remove those as well, by adding the following code to the page.

.sek-module .sek-module-inner ul {
list-style: none;
}