Red Green Blue Filter
Red gradient Green gradient Blue gradient progid:DXImageTransform.Microsoft.ICMFilter(ColorSpace=sRGB, Intent=0)
Red gradient Green gradient Blue gradient none
Red gradient Green gradient Blue gradient filter: ColorInfo(ColorSpace=sRGB, Intent=0)

Please use Microsoft Internet Explorer to see the difference (if any) ☺
You must also have a color profile for your monitor.

It should look similar to this picture:
3 gradients seen in MSIE 8 on Windows 7

Rafał Fitt