Color Fallback (RGBa)

dabblet.css

/**
 * Color Fallback (RGBa) 
 */

div {
	width:32px;
	padding:40px;
	font:20px "Helvetica Neue", sans-serif;
	margin:0 20px;
}
div#full {
	background-color: rgb(255, 153, 0);
}
div#half {
	background-color: rgb(255, 153, 0);
	background-color: rgba(255, 153, 0, 0.5);
}

dabblet.html

<div id="full"></div>
<div id="half"></div>

settings.json

{"view":"separate","seethrough":"","prefixfree":"1","page":"all"}