The use of color is just as important when it comes to a natural perspective, in many occasions a bright color can be boosted forward when placed on and subtle earth tone. this effect can also damage perspective when placed in the wrong order as it would pull the background forward, killing the third dimension, not to say that it cant be done, it is simply easier to have your dominate color in the front.
This was a fantastic project with and outstanding result. The wall displayed in the image is roughly 12 meters long by 2.5 meters high. I love the end result of this painting, many different designs and ideas lead to this final concept and product, myself and Jacqueline Jennings of Jax Place Guest House spent an enormous amount of time conceptualizing this space.