Exposing vodka based extracts to the sun.
I'be recently opened a deli style sandwich place in Sao Paulo, Brazil. The front of the shop is entirely in glass with metal shelves. I can't put food there but I also would prefer to have something not entirely decorative. Right now there are glass bottles with water and food coloring.
If it is workable I'd like to replace the water/dye mixture with vodka or ethyl alcohol based extracts. Things like vanilla, coffee, raspberry and the like. I know that wine, beer, whiskey and the like degrade in the sun. Does anyone know if these extracts would hold up?
If not, anyone have a good idea instead?