Hi Jayleeeee,
To change the color for hovering over the menu links, and for the box that shows on the homepage slider Go to Appearance -> Theme Options -> Design Options Tab -> Custom CSS paste the following CSS code and Click on save all changes button:
#access a:hover,
#access ul li.current-menu-item a,
#access ul li.current_page_ancestor a,
#access ul li.current-menu-ancestor a,
#access ul li.current_page_item a,
#access ul li:hover > a,
#access ul li ul li a:hover,
#access ul li ul li:hover > a,
#access ul li.current-menu-item ul li a:hover {
color: #05A9C5;
}
#access ul li ul {
border-color: #05A9C5;
}
.featured-text .featured-title {
background-color: #05A9C5;
}
Note: Please change above HEX color code #05A9C5 to your own color code.
Thank you!