I know that color pops out and black is dark but which is more healthy for your eyes
By looking at its emission spectrum and seing where the black lines are
Any other color.
Black .
Black right this better be right
To get better cooling because of Black Body radiation effect whihc is highest.
people remember things better in color because it pops out
Better don't smoke....
black colour is better in white activa .
Depends on your taste..
blue
Depends on what effect you want and what the image is of. A Black and White photo often has a more arty look, a Color photo is a better representation of the source.
no seing as the ps vita has two touch screens and the ds has one but if you mean 3ds it may be better but not likly.