blueee.
If you look on The-Prep's website and you look at some his work, and you click on "KOBE REEL SHOT" in his previewer thing, there's blue coloring in the background. It seems really simple, but I can't seem to figure it out. If someone can help me, then that'd be great.
If ou don't know what i'm talking about, here's an example;

I use PS CS3 btw.
If ou don't know what i'm talking about, here's an example;

I use PS CS3 btw.

