Criteria for Finding Appropriateness. Consistent with the Design Guidelines, the Historic Preservation Commission may consider the siting, design, arrangement, exterior design, design quality, bulk, rhythm, building elements, lighting, fixtures, directional emphasis, proportions, style, texture, details, scale, shape, materials, finish, color, and relationship to streetscape, of the proposed work and the relationship of those characteristics to the historic, architectural, cultural, archeological, and aesthetic significance of the historic site or district.