Question about color/light

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Originally Posted by Yarin

I bet it had to do with the lighting method. You said it was flashing, meaning it was on a capacitor, and it was most likely led lights, so I'm guessing what's happening is when the capacitor initially lets out the electricity, it's frequency is off a little, causing the led to mimic the effect.

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An LED is never going to emit anything but a single frequency (okay, a really, really tight band of frequencies). It's either conducting, and emitting light at that frequency, or it's not.

I'm with CornedBee on it being some kind of illusion.