This is basically scientific but relates to human energy. Science have it according to Wien's law that star with close whitish or violet colour have the highest energy while stars that are red has less energy.
Details to the law
Temperature varies inversely as with wavelength and as such red coloured stars have high wavelength since temperature is a function heat generated by the stars.
Old stars are red:new stars are violet. Every night you can look at the stars and observe an old star that can die soonest and the stars that will still leave longer. If you want us to enjoy the star stories please drop ur comments.
How astrologers relate this energy to human energy is not magic, but we can as human say the younger you are the brighter just as reddish stars are likely to die earlier than white stars that are newly born and younger among collection of stars.