We are also a bit restricted by the village's regulations for the historic center. The window frames should be brown. Most of the palazzi have another frame on the facade around the windows which is painted white. That makes the facade look even better than white window frames framed with white color. Some facades in the mosaic do not match the (new?) regulation.
(Remark: picture no 3, first row is taken in Tropea, another village with other rules for colors of window frames and shutters).