index.less

.inner-shadow(@x: 0px, @y: 2px, @blur: 4px, @opacity: 0.15) {
	-webkit-box-shadow: inset @x @y @blur rgba(0, 0, 0, @opacity);
	-moz-box-shadow: inset @x @y @blur rgba(0, 0, 0, @opacity);
	-ms-box-shadow: inset @x @y @blur rgba(0, 0, 0, @opacity);
	box-shadow: inset @x @y @blur rgba(0, 0, 0, @opacity);
}
.box-shadow(@x: 0px, @y: 0px, @blur: 8px, @opacity: 0.5) {
	-webkit-box-shadow: @x @y @blur rgba(0, 0, 0, @opacity);
	-moz-box-shadow: @x @y @blur rgba(0, 0, 0, @opacity);
	-ms-box-shadow: @x @y @blur rgba(0, 0, 0, @opacity);
	box-shadow: @x @y @blur rgba(0, 0, 0, @opacity);
}
.data-color-group {
	position: relative;
	display: inline-block;
	.data-color-menu {
		display: none;
		position: absolute;
		top: 100%;
		left: 0;
		z-index: 999;
		float: left;		
	}
}
.data-color-group.open {
	.data-color-head {
		.inner-shadow();
	}
	.data-color-menu {
		display: block;
	}
}
.data-color-menu {
	min-width: 160px;
	padding: 0;
	margin: 0;
	border: 1px solid #ccc;
	.box-shadow(0, 5px, 10px, 0.2);
	list-style: none;
	background-color: #fff;
	cursor: pointer;
	li {
		line-height: 20px;
		padding: 10px 25px;
		&:hover {
			background-color: #007bb9;
		}
	}
}

.data-color-head {
	display: inline-block;
	width: 64px;
	padding: 4px 12px;
	margin-bottom: 0;
	border: 1px solid #ccc;
	line-height: 20px;
	text-align: right;
	text-decoration: none;
	vertical-align: middle;
	cursor: pointer;
	&:hover {
		text-decoration: none;
	}
	.color-caret {
		margin-top: 8px;
		margin-left: 0;
	}	
}
.color-caret {
	display: inline-block;
	height: 0;
	width: 0;
	vertical-align: top;
	border-top: 4px solid #000;
	border-right: 4px solid transparent;
	border-left: 4px solid transparent;
	content: "";
}