Maybe picking nits here.
1. What is it that you could be loading?
2. How is the loading done?
#1 case, barrels of chemical, pallets of magic stuff, racks of whatever? Everybody sooner or later breaks a package on the dock which adds to the color of the thing along with surface divots, scratches and the like. I agree that it might be too splotchy although that could be easy to hide.
#2 case, if loading by forklift ( Gas, Diesel, Battery ) those things always leak sooner or later somewhere. Also the ramp is probably to steep for it to get up. Looks to tall for cross dock truck to train. If cross dock train to train remember to make room for the forklift to turn-around as backing out of one car and into the other will make the fork driver whine. If train to boat, some sort of crane could be needed to get stuff off the boat. Only boats I have ever seen ( my limited view of things ) that allowed drive on by forklift were auto haulers ... those boats are huge and can take a 10 - 15KLb forklift without tipping!
Later