OK...that's easy...here is the CSS that adds it in Bootstrapbase.
.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus,
.dropdown-submenu:hover > a,
.dropdown-submenu:focus > a {
background-color: #00699e;
background-image: linear-gradient(to bottom, #0070a8, #005f8f);
background-repeat: repeat-x;
color: #fff;
text-decoration: none;
}
If you want a solid colour use this:
.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus,
.dropdown-submenu:hover > a,
.dropdown-submenu:focus > a {
background-color: #00699e;
background-image: none;
color: #fff;
}
If you want a gradient background use this:
.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus,
.dropdown-submenu:hover > a,
.dropdown-submenu:focus > a {
background-color: #00699e;
background-image: linear-gradient(to bottom, #0070a8, #005f8f);
background-repeat: repeat-x;
color: #fff;
}
just adjust the HEX colour codes to suit your site colours.
Cheers
Mary