As I had ruined my previous Arkham City Batman with a shading glaze, I carried on painting my two alternative Batmen in their variant colour schemes (while I clean the other one up properly, a daunting task on such soft metal - my Recommendation, don't soak in paint stripper and scrub).
This is my "Urban Batman" done in greys and blacks, no Golden Yellow Belt, no blues - all shades of grey and (obviously) black - even the Bat is a very pale grey (though it looks white).
Needs another coat of Matt Varnish though - it looks much shinier in the picture.
