If alien races exist, some might have purple feathers. So far though, no one has met any alien race.
If they exist, some might have white feathers.
It is not currently known whether there even are any alien races. There might be, but this has not been confirmed so far.
No matter how often you ask, the only honest answer is that nobody has found ANY alien races so far, so nobody really knows anything about them for sure.
Yes. Some alien races have different skin colors (i.e. red, orange, yellow, green, blue, purple, pink, brown, black, white, etc.).
Yes. Some alien races have different eye colors (i.e. red, orange, yellow, green, blue, purple, pink, brown, black, white, etc.).
Yes. Some alien races have two hearts.
Two pupils in the eye would be eerie,and perhaps some alien races have them.
Some alien races, if they exist, may have five arms.
From the data we have, we have not discovered any alien races.
Yes. Some alien races have multiple heads. But currently, it is unknown.
Yes. Some alien races have multiple hearts. But currently, it is unknown.
If aliens exist there could be some alien races that have reptavian characteristics.