All what one is used to, I guess, like an imprint on the mind. The original photo is
known for its direct gaze. It's still there in the colored version (which looks unusually natural) and if one might be interested in how someone struck one in real life, this would
likely be close. Maybe others might not ever want to 'see' Einstein in anything but the old b&w but for me this kept the directness while adding some life to what was a stunning portrait in a newspaper-style look.