I find that if I brew black tea for five minutes and strain out the leaves, the first cup I pour will be more light brown than black. Nothing wrong with this, I believe that the taste of tea is about subtlety, but I find that if I reboil the tea it actually turns black and might even be stronger. Since I like to make my morning and work tea the night before and reheat it in the morning, do you think it would be possible to brew the loose leaves in cold water, strain out the leaves and not heat it up until morning, or is there something about the boiling water that makes it brew better?