Yes, storm windows may be added to windows within the historic districts if done according to the Design Guidelines. Storm windows shall be correctly sized to fit the window opening, including round arches. Frames should obscure the window behind as little as possible and should be full view or have the meeting rail match that of the window behind it. Storm windows can be wood or aluminum with a painted, baked-on, or anodized finish. The finish should match the window frame in order to blend into the surround as much as possible.