Styling Block Quotes

I’m having trouble getting block quotes to appear how I wish. You can see how it looks thus far HERE. I’d like the text to be white and be able to remove the quotation marks image and replace it with my own.

This is the code I have at the moment –

blockquote {
	font-family: Georgia, serif;
	font-size: 16px;
	font-style: italic;
	width: 500px;
	margin: .25em 0;
	padding: .25em 40px;
	line-height: 1.45;
	position: relative;
	color: #3b8dbd;
	border-left: solid 5px #3431bd;
	background: #3b8dbd;
}

If anyone can help out it’d be much appreciated.

Cheers.