Accordians:

h4.vc_tta-panel-title {
font-size: 1em;
padding-bottom: 0px;
}
.wpb-js-composer .vc_tta-color-blue.vc_tta-style-classic .vc_tta-panel .vc_tta-panel-heading {
background-color: #2e325b !important;
}
.wpb-js-composer .vc_tta-color-blue.vc_tta-style-classic .vc_tta-panel.vc_active .vc_tta-panel-title>a {
color:#fdc815 !important;
}
.wpb-js-composer .vc_tta-color-blue.vc_tta-style-classic .vc_tta-panel.vc_active .vc_tta-panel-heading {
background-color: #366bb5 !important;
}
.wpb-js-composer .vc_tta-color-blue.vc_tta-style-classic .vc_active .vc_tta-panel-heading .vc_tta-controls-icon::after, .wpb-js-composer .vc_tta-color-blue.vc_tta-style-classic .vc_active .vc_tta-panel-heading .vc_tta-controls-icon::before {
border-color: #fdc815 !important;
}

Buttons:

.vc_btn3 {
color: #FFFFFF !important;
background-color: #2e325b !important;
transition: all .5s ease-in-out;
-webkit-transition: all .5s ease-in-out;
}
.vc_btn3:hover {
color: #fdc815 !important;
background-color: #366bb5 !important;
}