Parsing XmlAttribute as complex type

I'm trying to create object model of SVG format. So, as it XML, i'm using XmlSerializer. But i have a problem. There're some xml attributes named "style". It looks like complex type, but represents as string. There's example of this attribute:

style="fill:none;stroke:#00ff00;stroke-width:8.7489996;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:8.74900006"

As you can see, there're properties like "fill", "stroke", "stroke-width" and etc. I wrote the class

public class SvgStyle
{
    public string FillColor { get; set; }
    public string StrokeColor { get; set; }
    public float StrokeWidth { get; set; }
    public int StrokeMiterlimit { get; set; }
    public float StrokeOpacity { get; set; }
    public float StrokeDashoffset { get; set; }
    public string StrokeDasharray { get; set; }
}

and an another class

public abstract class SvgGraphicElement
{
    [XmlAttribute("style")]
    public SvgStyle Style { get; set; }
}

All i got is exception

Cannot serialize member 'Style' of type Svg.SvgStyle. XmlAttribute/XmlText cannot be used to encode complex types.

I tries to use IXmlSerializable interface implemantation and OnSerializing/OnDeserializing methods, but all i got was another exceptions. Is there any way to deserialize this string to my class? Thanks.