LED two different colours depending on polarity?

[rousejeremy]

I had found an LED in my junk bin and to find out the colour hooked it up to a battery. It was a yellowish/amber colour. For the hell of it I flipped it on the battery to see what would happen, and it was green! I took it out of the holder to see where the flat side was and it's supposed to be green. Why a different colour with the Cathode to positive?

The spellchecker is telling me I'm spelling colour wrong but I'm Canadian and stubborn.

[Naz Nomad]

It's just a bi-colour LED ... basically 2 LED's connected in reverse parallel, in one package.

[MoltenVoltage]

Those are real cool, especially hooked up to a slow AC signal.

I haven't used one in a pedal yet, but I will

[rousejeremy]

That sounds interesting. Especially if it could be used with the LED border. How could it be done in a pedal?

Those are real cool, especially hooked up to a slow AC signal.

I haven't used one in a pedal yet, but I will

[JKowalski]

Hahaha, I just realized something. A while ago someone brought up the idea of clipping diode packages - well, there ya go!

Two anti-parallel LEDs in one package for all your clipping needs. 

I can't believe I didn't think of those things!

You might have slightly different clipping levels for each side, however, but then again people often look for that kinda thing.