Make the led blink when message has been received.

When a message is received in pidgin, have the led blink 5 times in a different color.
I would like to have the LED blink until the message is known to be have been seen; however, as far as I can tell and from what I've been told on the IRC chat room this is not possible through the DBUS implementation as it now is. Having it blink for a defined amount of time is a solid middle ground.