[Plugin: CSS] Multicolor Gradient for IE

Is there a way to have a multicolor (Rainbow) gradient in IE? In Mozilla and Chrome I could do something like this:
linear-gradient(to right, #000066, #990066, #FF0066, #FFCC00)
But for IE only two colors:
filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=1, StartColorStr=#000066, EndColorStr=#FF0066)

http://wordpress.org/extend/plugins/css/