[morinted]

I've heard the center light referred to as "amber".

[bhrgunatha]

In the UK it's Amber. I can't remember ever hearing yellow.

[unholiness]

In the UK it's actually a different color though. Their center lights are a light orange that, as an American, I wouldn't hesitate to call amber.

[jknz]

My mistake. Actually it is Spanish and French that use different colors for the middle light -- not English.

The middle light is "amarillo" (yellow) in spanish, while it's "orange" in French.