I want to try and build a box with 8 LEDs that would light up and stay on when the control box turns on and off. I am running 8 stations at night through a control box and would like to some how know which stations came on and off. I would like to use two different LEDs to show that the station came on and one that tells me that it is off. I want the LEDs to stay on through the whole night so that when I wake up I will know if they actually came on and went off. I need 2 LEDs for each stations which would make it a series of 16 LEDs that I will need. I want to use a red LED to show that the stations came on and a green one to show the stations are off. My problem is who do I do this and how do I keep the LED lit after the stations go off. Any ideas?