You know a lot of people play Sudoku and work crossword puzzles to exercise their mind. Any chemists out there ever try to draw out syntheses for natural products or any other molecules to gain extra brain power? Here's a shot of the plasma from the lab.
The color of the plamsa is actually white, but the window is tinted green with something that prevents the UV light from harming our eyes. The ultraviolet light is emitted from the metals in the water samples after they gain energy from the plasma. There is actually no reason for the window at all, it just looks cool.