I like the color version better. I think this image would work great if you had the background dark so you couldn't see it. Like the tunnel led to nothingness. Shoot at night, do some selective pp, maybe try a starshine for the lights.... Voila! Just try some different stuff, either way - reshoot! This image looks good on its own though, I just see potential for improvement.
For me the B&W takes it, it looks like a great find to shoot. I was thinking what it would be like if you could get someone to sit in the far ligthed section, back against the wall but not looking at the camera. That would really grab