I have now changed to the style.css this places to my value. But it has not changed on the website and remains white
.um-dropdown {
position: absolute;
height: auto;
background: #202020;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;
z-index: 10;
display: none;
border: 1px solid #e5e5e5;
box-sizing: border-box;
-webkit-box-shadow: 0 0 2px rgba(0,0,0,0.1);
box-shadow: 0 0 1px rgba(0,0,0,0.1);
.um-dropdown-arr {
position: absolute;
color: #202020;
font-size: 24px;
width: 24px;
height: 24px;
overflow: hidden;
z-index: 15;
color: #eee;
.select2.select2-container .select2-selection{
display: block !important;
height: 40px;
padding: 0 0 0 12px !important;
overflow: hidden !important;
position: relative !important;
white-space: nowrap !important;
line-height: 35px !important;
color: #666 !important;
font-size: 15px !important;
text-align: left !important;
text-decoration: none !important;
-moz-border-radius: 2px !important;
-webkit-border-radius: 2px !important;
border-radius: 2px !important;
background-clip: padding-box !important;
-webkit-touch-callout: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
background: none !important;
background-color: #202020 !important;
border: 2px solid #ddd !important;
}