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I just saw that "Faintelgeuse" is not brighter than Bellatrix anymore.
I am curious how it will develop in the upcoming weeks.
But a supernova within our lifetimes is highly unlikely.
About the "yellow" Betelgeuse : actually the star *is* yellow, because the temperature and hence color is the same as a incandescent halogen bulb (3000 K). But because it is faint compared to much closer terrestal lights it appears 'red' to our eyes.
When you are a few kilometers from a 3000 K lamp (can also be a warm white LED), or even only a few hundred meters from small warm white garden decoration LEDs, it appears as red as Betelgeuse (or Antares or whatever M class star).
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