ITSSTOOLS/js/themes/dark/dark.tree.css

body.dark { font:11pt Calibri; background:#111; color:snow; }

.dark .ui-tree-nodes * { outline:none; }
.dark .ui-tree-nodes {
    position:relative;
    list-style: none;
    margin:0;
    padding:0;
    margin-left:0;
    padding-left:0.8em;
}

.dark .ui-tree-node {
    margin:0;
    padding:0;
    cursor: default;
}

.dark .ui-tree-node-text {
    text-decoration:none;
    color:snow;
    padding:0 .3em; 
}

.dark .ui-tree-node-selected > .ui-tree-node-text {
    background: #448;
}

.dark .ui-tree-node-button {
    border: 1px solid #222;
    padding-left:1px;
    color: #666;
    font:7pt Courier New,monospace;
    margin-top: 0.5em;
    position: absolute;
    left: 0.2em;
    width: 0.7em;
    height: 0.8em;
    line-height: 0.8em;
    text-decoration: none;
    display:none;
}

.dark .ui-tree-node-expanded > .ui-tree-node-button {
    background: #181818;
    display:block;
}

.dark .ui-tree-node-collapsed > .ui-tree-node-button {
    background: #222;
    display:block;
}

.dark .ui-tree-node-moving > .ui-tree-node-button {
    background: #282828;
}

.dark .ui-tree-node-moving > .ui-tree-node-text {
    background: #474; color:#FFF;
}