greetings, I have made the colors as you require. I have designed the front door and the stairs as shown so it would fit the whole design. The backyard is designed so it could be used as a family area. I have made the railing you suggested and I also suggest two more railing to choose from. The back windows are designed to be suitable for the whole design and to give a pleasant looking of the building. I hope you like it. I would be delighted to hear your opinion and what you think about the design.