The Astral Realm, obviously, is the realm from which all psychic energy originates, and the realm in which all psychic energy is contained; it is home to all spirits who have yet to make it to the afterlife, and travel through it is governed by thought and emotion alone (which is why it's so easier to find people with emotional significance to you, than to summon evil spirits/demons, etc.); the Astral Plane is very colorful, though most of it is purples, reds, blues, and pinks, and its temperature and color changes depends on what kind of spirit resides in the area you approach/encounter (these colors visible in the Material Realm denote a person's aura)
1)
http://superpower-list-forum.2863604.n2.nabble.com/Offical-RP-thread-td5214668i80.html#a5621753(Cookie channeling Tamara)
2)
http://superpower-list-forum.2863604.n2.nabble.com/Offical-RP-thread-td5214668i80.html#a5713570(Ginger finding Torres, so they can teleport to wherever Jack is)
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)