Repurposing

Cleaning and rearranging the kitchen this morning, I hit on an idea. I have an old cigar humidor that hasn't held a stogy in ages, so I put Lindsay's tea bags in it. They look great - kind of like what they bring around at some restaurants (very British, don't you think?)

My question is: does anyone know if there is an optimum humidity for keeping tea? The humidor has a hygrometer and humidity source built-in, so we might as well use it if it would help.

Any ideas?