I disagree on your statement about stars colours.
On some of the brighter stars you can definitely see colours.
Of course only different shades of white, but different enough to tell one star from another without seeing the context.
Wega and Sirius for example are quite bluish (in sirius case scintilating because of its brightness)
while Antares and Beteigeuze are quite reddish.
Not talking about planets.
Best regards,
Jan