62|A FONDO “The facade is the main part of the building, where sustainability becomes more present as it interacts directly with the external environment: as temperature control, lighting filter, energy sensor, etc.” moment, with higher brightness for night and longer cuts, as well as brighter colors for the day and cuts associated with the dominant climate. In terms of architecture it can be set that the sustainable issue has been addressed with both passive and active systems of energy use, more or less present. You can then set the theme you are working on and various criteria are being properly implemented. This is a semiformal sustainable ar- chitecture, which recognizes certain accessories and specific peculiarities that allow the relationship between energy use outside - inside. Formal The formal style is absolutely de- termined and limited by the specific use for the occasion. Considering all the necessary adjustments to fit the body of the person who will use it. Thus, one can immediately recog- nize if the person is dressed forma- lly and if clothing is fitting his/her figure or not. Thus, sustainable formal architec- ture is optimally suited to the envi- ronmental requirements, responding effectively to the energy challenges of each project, becoming decisive in the way of doing architecture. The projects respond in various ways to the sustainable basis as effective part in the design and exe- cution. The design parameters are not only resulting in a sum of technological accessories on the building, but res- pond to a comprehensive approach from the outset. ■