stylecow plugin msfilter-background-alpha

Stylecow plugin to add ms filters emulating the rgba/hsla colors in backgrounds in explorer < 9 using ms filters. More info: http://css-tricks.com/rgba-browser-support/

You write:

body {
    background: rgba(0, 0, 0, 0.2);
}

And stylecow converts to:

body {
    background: rgba(0, 0, 0, 0.2);
    -ms-filter: 'progid:DXImageTransform.Microsoft.gradient(startColorStr="#33000000", endColorStr="#33000000")';
}

More demos in the tests folder