Thank you. That is interesting. It seems that they can see red, they just don’t like it and they can’t tell the difference between red and green.
According to the internet, if one can believe what’s on the net:
“Explaining the dislike of elephants for these two colours white and red, Mishra said a study conducted all over India has shown that elephants have spotted and targeted person wearing red or white shirt or trousers or both in the mob more than person wearing other colour shirts/ trousers.”
That's about as definitive an observation as stating that "drivers wearing brown or black shoes or gold wristwatches - or both! - are (statistically) more likely to be involved in multi-vehicle car accidents than people wearing other-colored shoes or other-colored wristwatches."
I am esp. suspicious of that "in the mob" part: When an elephant attacks a mob, how are you going to find out which individual the elephant had singled out?
Regards,