[css] CSS triangle custom border color

Attempting to use a custom hex color for my css triangle (border). However since it uses border properties I am unsure how to go about doing this. I would like to steer clear of javascript and css3 simply because of compatibility. I am trying to have the triangle have a white background with a 1px border (around the angled sides of the triangle) with color #CAD5E0. Is this possible? Here's what I have so far:

.container {
    margin-left: 15px;
    width: 200px;
    background: #FFFFFF;
    border: 1px solid #CAD5E0;
    padding: 4px;
    position: relative;
    min-height: 200px;
}

.container:after {
    content: '';
    display: block;
    position: absolute;
    top: 10px;
    left: 100%;
    width: 0;
    height: 0;
    border-color: transparent transparent transparent #CAD5E0;
    border-style: solid;
    border-width: 10px;
}?

My fiddle: http://jsfiddle.net/4ZeCz/