
In the Wizard of Oz, the heroine Dorothy see's Kansas as a dull, boring place, and it's not colorful at all; hell, it's in black and white. But when going to Oz, we the audience see that Oz is colored, and she goes a little adventure with her friends (four, notably... Toto, the Lion, the Scarecrow, and the Tinman), and she finds her way home, and the way home turned out to be something she could've done all along - all she had to say, really, was admit that there was, "no place like home" even though she thought of it as a black and white place. Tsukasa's situation is easily comparable, his rememberance of the Real World is that's it's black and white, but we do see the red sirens off the ambulences in episode one, and the lively green glow from his headset. Red, however, is usually a color that denotes "hate," "violence," "anger." Tsukasa's interpretation of the Real World then is that it's a dull place full of hate. He hates it there, and wants to stay in The World. The only place the players truly "alive" then is in the imaginary online world. By the end of the series, Tsukasa goes and awakens Aura because, well, he wants to. He wants to go out to the real world, and he's decided that Aura is his way out. He's no longer afraid of harm from his Father, or from Morgana, because no matter what, he has a place where he belongs, with Subaru. When she goes out, the Real World is still black and white, with the Red Coloring on the Hospital Cross. When Tsukasa and Subaru's players look at each other, they're grayscaled. Tsukasa realizes this is where she belongs in the Real World, she begins to smile, and she goes into color. When Subaru realizes where a wheel chaired girl constantly judged and pitied by society has a place (or person) who will not judge her, she smiles, and goes into color. She welcomes Tsukasa to where she really is home; Tsukasa, like Dorothy, then accepts the real world. After the melodrama behind their hands, we see The World. It's colorful, but slowly gradiants into grayscale, and you hear the words of Morgana, with the glowing color red in the tombstone. The World has now become a psychological torture of Tsukasa's, as the real world and reality once were.
... so... yeah... @_@;