I'm accually impressed. It looks smooth, but there are a few things to point out.
http://www.nolimitsdevcenter.net/i15925
This picture is very very dark blue.
Compare to
http://www.rcdb.com/ig3081.htm?picture=40 ,the rails are d.blue when they could (not should), COULD be grey. But accually, in NL, that wouldn't look good, so stick with what you have. The point I'm trying to get at is lighten the dark blue a tad. Not too much, just make it so it is dark blue, not black. I really can't wait for this! Take your time. Really.