Change system messages look

I has been asked before but never answered: how to change the look of the system messages? The one you get after a purchase etc..

When I look with firebug it lookes like the class="messages".
For instance I changed these to my own style, but no luck.

div.hikashop_messages{
	border-bottom-style:dotted;
	border-bottom-width:1px;
	border-top-style:dotted;
	border-top-width:1px;
	font-weight:bold;
	margin:5px 10px;
}

.hikashop_messages li{
	list-style-type : none;
}

div.hikashop_warning{
	background-color:#eff2f5;
	border-bottom-color:#ee1169;
	border-top-color:#ee1169;
	color:#392d31;
}

div.hikashop_success{
	background-color:#eff2f5;
	border-bottom-color:#ee1169;
	border-top-color:#ee1169;
	color:#392d31;
}

Hi,

This is the Joomla messages, it's not HikaShop related.

But you can add/edit the css property for:
#system-message dd.notice{ /* properties */}

Thanks! That's what I was looking for. I found it in: media/system/system.css