Thinking in B&W has become such a habit for menover the years that I must force myself to think and shot in colour. You are not alone in that regard. For me to load a camera with colour film means that I will have film in that camera much longer than if it were B&W. Obviously I see in colour but when I am looking for subjects to shoot everything seems to render to shades of grey so needless to say I don't load much colour except for when I KNOW the subjects will be in colour. My point is, you are not alone.