*''[[black hole]]'' — by definition, since a black hole exerts so much gravity such that light can't escape, a person looking at one wouldn't see any color at all (since black is technically a color defined by a large absence of light). | *''[[black hole]]'' — by definition, since a black hole exerts so much gravity such that light can't escape, a person looking at one wouldn't see any color at all (since black is technically a color defined by a large absence of light). |