No, this is not a reference to any specific Drydock in the films. This is an idea of my own from little short film I am making. I will tell you there's a shot in my film where we see clearly written on the gangway structure "San Francisco Orbital Dock #2"
There are probably quite few of those drydocks; this one is the one I like, and I chose to color the way I did. I did not create the model; I don't have that skill, but I did alter the textures some.
The original author of it, named Prologic9 on Foundation 3D, DID have it in the rusty color. Part of my difference is due to rather blue lighting in the shot, and to a certain amount of my changing the textures. (Thanks Prologic9 for such a great model!)
As you will see when I put out the film in the next few months, I am not following, nor worried about, canon in this instance. This will be my own vision BASED on a mashup of canon concepts.
It's just for fun.