UriParserPrefixfreeEnumValue

var parser = new ODataUriParser(
    extModel.Model,
    ServiceRoot,
    new Uri("http://demo/odata.svc/GetColorCmykImport(col=TestNS.Color'Blue')"));

var path = parser.ParsePath();

var parser2 = new ODataUriParser(
        extModel.Model,
        ServiceRoot,
        new Uri("http://demo/odata.svc/GetColorCmykImport(col='Blue')"))
{
    Resolver = new StringAsEnumResolver { EnableCaseInsensitive = true }
};

// Identical to path
var path2 = parser2.ParsePath();