You can add these CSS blocks to your Thesis -> Custom CSS screen

1. Change the product sidebar to float to the right

.columns_alt > .sidebar {
    float: right;
}

2. Edit the primary / secondary menu colors / styles

/* Change the primary menu details */
.primary-menu a, .primary-menu .current ul a, .primary-menu .current-cat ul a, .primary-menu .current-menu-item ul a {
    color: #333333;
    font-family: Arial,"Helvetica Neue",Helvetica,sans-serif;
    font-size: 14px;
}

/* Change the primary menu current menu item details */
.primary-menu .current a, .primary-menu .current a:hover, .primary-menu .current-cat a, .primary-menu .current-cat a:hover, .primary-menu .current-menu-item a, .primary-menu .current-menu-item a:hover {
    color: #333333;
    font-family: Arial,"Helvetica Neue",Helvetica,sans-serif;
    font-size: 14px;
}

/* Change the secondary menu details */
.footer_menu a, .footer_menu .current ul a, .footer_menu .current-cat ul a, .footer_menu .current-menu-item ul a {
    color: #333333;
    font-family: Arial,"Helvetica Neue",Helvetica,sans-serif;
    font-size: 14px;
}

3. Show slider images on mobile (hidden by default):

.slide img {
    display: inline;
    visibility: visible;
    height: auto;
    max-width: 100%;
}