You can reach the design of your home by changing the theme of just a few colors to capture the modern middle ages air. For this you need to choose compatible colors. Nowadays, the most beautiful and useful color harmony is between gray and yellow. The same black and white as yellow and gray are compatible with each other, they complement each other. Here are some room pictures decorated with yellow and gray
With solar yellow curtains and pigeon-gray color walls, it will be totally wonderful. Especially if you put them in harmony with cream colored sofas.