it was definitely a fire , with red , yellow and orange flames , and there was some , yes , blue sky , and the golems were a pretty good reddish-brown , but the flesh tones ... well , 'flesh-coloured ' was a bit of a tricky one in ankh-morpork , where if you picked your subject it could be any colour except maybe light blue , but the faces of many of the bystanders did suggest that a particularly virulent plague had passed through the city .