What is the ruling on painting with gold-colored paint or using gold-colored wallpaper, knowing that it is not real gold?

A color that resembles gold but is not real gold or gold leaf does not take the ruling of gold. Therefore, it is permissible to use it in paint or wallpaper, as long as it does not reach the point of extravagance. However, ornamentation with gold and silver in homes and on walls is forbidden due to the extravagance and ostentation involved.