I am looking to implement a coating to be applied to the surface of a resin that changes color upon exposure to alcohol. More specifically, changes color and then changes back to its original color as the alcohol flashes off. If this is difficult, could several coatings be applied in very small layers on top of one another so that as one coating is exposed, a color change takes place, then the coating flashes off with the alcohol, leaving the next layer for use again in this color change process? If anyone knows any information regarding this topic or can point me to the group who may know about this topic I would be very grateful. Thank you.