Console colorizer

To be able to apply various colors to the console I created a ConosoleColorizer. It's really simple. It just takes an XML and renders it to the console with the colors specified.

The element names are actually optional and can be any names. They are only required to parse the XML. What matters are the attribute and color names. I didn't know how to solve it with less effort without inventing a new markup.

```
internal class ConsoleColorizer
{
public static void Render(string xml)
{
Render(XElement.Parse(xml).Nodes());
}

public static void Render(IEnumerable xNodes)
{
Render(xNodes, null, null);
}

private static void Render(IEnumerable xNodes, ConsoleColor? lastForegroundColor, ConsoleColor? lastBackgroundColor)
{
foreach (var xChildNode in xNodes)
{
var xElement = xChildNode as XElement;
if (xElement != null)
{
Render(
xElement.Nodes(),
SetForegroundColor(xElement),
SetBackgroundColor(xElement)
);
}
else
{
RestoreForegroundColor(lastForegroundColor);
RestoreBackgroundColor(lastBackgroundColor);
Console.Write(((XText)xChildNode).Value);
}
}
Console.ResetColor();
}

private static ConsoleColor? SetForegroundColor(XElement xElement)
{
var foregroundColor = (ConsoleColor)0;
if (Enum.TryParse(xElement.Attribute("fg")?.Value, true, out foregroundColor))
{
return Console.ForegroundColor = foregroundColor;
}
return null;
}

private static ConsoleColor? SetBackgroundColor(XElement xElement)
{
var backgroundColor = (ConsoleColor)0;
if (Enum.TryParse(xElement.Attribute("bg")?.Value, true, out backgroundColor))
{
return Console.BackgroundColor = backgroundColor;

This is dangerous: ((XText)xChildNode) you can't make the guarantee that the child node will be a text node. For example, say that I have this console message:

var message = 
@"
    hallo
    
    colored 
    console!
";
ConsoleColorizer.Render(message);

That's an InvalidCastException right there so only part of the message will be printed out.

var backgroundColor = (ConsoleColor)0; is odd, it's about the only place I don't use var... ConsoleColor backgroundColor; is much clearer.

StackExchange Code Review Q#145139, answer score: 3