Morse code using Raspberry Pi

I wrote a Python app for the Raspberry Pi that converts a message to Morse Code and "transmits" it using some LEDs on a breadboard. After the first draft, I found it very difficult to see the difference between dots and dashes. So I coded up dots as the red LED and dashes using the blue LED. The duration of each matches the standard time -- red is one unit of time, blue is three. There are also standards for gaps between letters and words. The delay between dots and dashes is 1 unit, between characters is three units and between words is 7 units.