By default when you connect a Bluetooth device, like a headset, to your Blackberry Storm the LED status light will turn blue to indicate the connection. This kinda makes the status light useless for anything else. If you want, you can configure your Storm so that it does not indicate the Bluetooth connection with the LED status light, this way the status LED can indicate other things.

To configure device this way click the Menu button from the Home screen and select Options. Select Bluetooth and then press the Menu button and click Options. You can then change the LED Connection Indicator field to Off. To save you change, press the Menu button again and select Save.