Using WPF Converters to Affect Multiple Properties

I’m working on my first WPF application.  I’ve done a ton of reading on WPF and it’s helped me in my understandings of how WPF works.  So far, I’m really liking the data binding flexibility WPF gives you.  That, along with a very testable MVVM-based architecture, has made the experience a fun one!

Yesterday, I came across a situation where I needed a single item from my view model (an enum value) to affect two properties on a  WPF element (the Foreground and Background colors of a DataGridCell).  I’m familiar with value converters, but they only convert to a single value.  I did some research on MultiValueConverters, but, as seasoned WPF developer Anne Marsan pointed out, they take multiple inputs but still only produce a single output.  How to proceed?

NOTE: I’ve provided sample code in a BitBucket project here.  Each “attempt” that I detail below is tagged in the repository so you can easily see the implementations of each approach by switching your working directory to a certain tag.
First Attempt (Tag: Attempt1)

My first attempt was brute force and worked, but was messy – I simply created two value converters: both would take my enum, but one would return the background color and one would return the foreground color.

[ValueConversion(typeof(CompareResult), typeof(String))]
class ForeColorConverter : IValueConverter
{

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var result = (CompareResult)value;
        var ci = ColorInformation.FromResult(result);
        return ci.ForeColor;
    }

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