Try using spot lights on the lamp set at about .1 or lower, use the colour sampler to get the reflective colour from around the lamp for the spot light, you might have to use 2 or 3 spot lights to get the results you need taking samples from the grass area the pavement and the road. I would put some noise on the texture for the lamp and see how that looks as bullet said there is not texture on them. Also look into what reflective colour you might get of the white glass you could put a image plain in front of that..............dave

edit:forgot have the spotlights faceing up from the colour they are reflecting from