rainbowification can also be spelt as rainboification and can mean to go from dark to light or vice versa or in science/everyday activities for a substance to diffuse in a nice pretty pattern of colours. English based (inventors of the sandwich).
the chlorine oxide mixed with the bromine solution rainbowified the tube. The room was rainbowified when the curtains were opened.
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2 million.