title color

if you still need it here the way to change a few things
(i have another post contribution that says more about the plus/minus feature)post here

add to your css (adjust as needed)

.ui-accordion-header{
  background-color:#507642; /*Background Color of Header*/
  margin:5px 0 0;
}
.ui-accordion-header a{
    padding:5px 12px;
    background: #507645; /*Background Color of Header Link*/
    color:#FFF; /*text color of link*/
    display:block;
}
.ui-accordion-header.ui-state-active a,
.ui-accordion-header a:hover{
    background-color: #507645; /*Hover Background Color of Link*/
    color:#000; /*Text color on hover*/
}
/* Useing FontAwesome plus/minus signs when expanded/collapsed*/
.ui-accordion-header a:before {
color: #FF7C00;
content: "\f067";
font-family: FontAwesome;
font-style: normal;
font-weight: normal;
text-decoration: inherit;
padding-right: 0.5em;
text-decoration: none;
}
/*toggle Useing FontAwesome plus/minus signs when expanded/collapsed*/
.ui-accordion-header.ui-state-active a:before {
color: #FF7C00;
content: "\f068";
font-family: FontAwesome;
text-decoration: none;
}
/**/
.ui-accordion-content{
    padding:10px;
    background-color:#ffffff;
    border-style:solid; /*Border around drop down box (content section)*/
    border-width:2px;

}