As it stands, I prefer the mon to the colour because the scene is virtually monochromatic, and the colour drags the eye down to the bottom right, whereas the whole thrust of the composition seems to be attempting to make the eye do the reverse. Note that this does introduce an element of temsion and dynanism, which might be exactly what you want.
I like the way that the top of the fence lines up with the horizon - or I would if it did. As it stands, it's just slightly out, which makes me think that it might have been an oversight. As an exact match for level, it would have made an interesting statement. You'll also note that although the horizon is level, the top of the fence isn't; I wonder if that was dues to the fence, or your camera position/angle; and whether changing position would have improved things. Assuming that you think it would be an improvement.
My biggest problem is the expanse of fence on the right hand side. I@ll admit that I haven't checked (I usually do!) but it seems to exhibit a small degree of distortion which in turn makes me think of a wide angle lens - possibly too wide, too close.
As a final point - and one that is clearly not going to be welcome - I question the mixture of a soft effect due to the long exposure and the sharp effect of the fence. It seems like two contradictory styles that are clashing.
On the flip - now that I've made my comments I've read the others - it's always interesting to see the effect. Some have said that because we read text left to right, it helps if the flow in an image works that way as well. But that presupposes a writing system like ours, rather than right to left (or even top to bottom) that others use. In general, I think it may depend on the compositional elements present.