Is the Power Button suppose to light up?

Hi, I remember Macbook Pro's power button would light up with white light when it is on.
My Macbook Air doesn't seem to light up the power button. Is it suppose to be like this?

jamesjm88 wrote:
Thanks for you answer! However I still think that it would have been a nice touch if the Power button lit up in white or green. Don't you guys think so as well?
No, I don't think it's necessary to have a power button light up. If you're already using your computer and it's on, there's no need to additional indicators to tell you it's on. It's already on! The screen is alive etc.

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