The iPhone has a great battery, it really doesn't need a charging indicator LED.Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_8 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8E401 Safari/6533.18.5)
the implementation of it. no need for charging/full charge alert..but the concept of subtle colors for different notifications