Doorways are such universally powerful metaphors... I love the contrast between the browns and the blue/green. I like how the frame goes around the entire door, even the bottom, further giving the impression of the space beyond being fortified by boundaries. The studs add defense, and even though the door seems almost ancient, it is very strong and sturdy yet. The brick archway at the top suggests that this is a passage of nobility, worthy only of those esteemed... The colors just honor the threshold of the plane. The theme for me is that there are things in life worth protecting.