Mhh, Dark Matter .. not only recedes when pushed but does so faster than you pushed. Given that its responsible for the (accelerating!) expansion of the universe it would be like... anti-gravity, except it doesn't just counter gravity it contradicts its very existence, so containing it with gravitational fields would probably be very explosive.
Speaking of this, i wonder why scientists call it Dark Matter. If it were *matter* the universe would not be expanding. Conversely why does it have to be dark matter, just because we can't see it, doesn't mean its there! For all we know the space in between the galaxies might be space ruptures where the laws of physics are non existent and which behaves more like a loose simulation (no drag/attraction forces, only repulsion forces).
Ehm so, i think Dark Matter is a really weird thing to shoot around. ^^ Why not Anti-Matter ;p
Also theres a logical fallacy, dark matter isn't repelled by gravity it REPELS gravity. Which reminds me that scientists still don't know what gravity actually is. Maybe gravity isn't a natural force but a variable constant and the universe has 2 states, and in dark matter gravity works the reverse.
So instead of gravity wells in dark matter it would create gravity bubbles...
I am fully for more lore by the way ,p