Italianate houses tended to be painted in "stone" colors to echo the European models from which they are derived. The sashes were always dark, and that is an important part of the look. generally, besides the windows, the body and trim were not high contrast. probably no more than 4 colors. You don't really start to see bold, high contrast polychrome schemes until the last say two decades of the 19th century. That means a palette of greys, grey-browns and browns for the most part. That being said, these houses lived through all of the eras of painting, so if you want a 12 color Queen Anne paint scheme, go for it! I did some research on authentic colors for our(the museum's) 1870 Italianate railroad depot, and we settled on a 3 color scheme based on historical models. The body of the structure is buff colored brick, and the sashes are dark reddish brown and the trim is dark blue green and light blue green. photos can be found at the museum's website, http://www.tri-citiesmuseum.org
. (I also got to choose the interior colors of that building. That is an 1890's scheme with a dark gold as the fill color, olive green for the wainscoting, dark brown and black for the trim, a pale blue ceiling, and a cornice that uses light green, olive green, black, brown, salmon, and peacock blue, as well as gold leaf).